• What is the PhD Viva?

Written by Mark Bennett

The viva voce is the final assessment for a PhD. It is an oral examination where the student defends their research to two academic examiners. This involves answering questions about your work, typically related to the literature, methodology, your findings and the significance of your conclusions. In some countries (like the USA ) the viva is actually referred to as a 'PhD defence', because the candidate defends their thesis from these questions.

This guide explains exactly how the viva works, what to expect on the day, how to prepare and what happens afterwards.

An overview of the PhD viva

The PhD viva can seem like an intimidating process, but it actually serves a very simple purpose: proving that your research is original, that you understand its contribution to knowledge and – most importantly – that your work is your own. It's also very rare for students to fail.

Who attends a viva?

A PhD viva usually involves two examiners: one internal examiner (from your university) and one external examiner (from another university). Both should be familiar with your field and the external examiner in particular should be a recognised expert in your specific research area.

The internal examiner usually acts as the chairperson for the exam, making sure it follows your university's procedures.

Your supervisor doesn't normally attend the viva itself, but they will help you prepare for it and should be around to provide support on the day.

How long does a PhD viva take?

There is no set length for a viva voce exam, but most take between one and three hours .

A longer viva doesn't necessarily indicate any problems with your thesis: it may simply be that the examiners are enjoying the discussion. Equally, a shorter viva may just mean that your examiners are satisfied with the thesis and your responses to their questions.

Why is the viva necessary?

The most basic function of the viva is to prove that your work is original (i.e. not plagiarised). This is especially important because the criteria for a doctorate is to offer a significant new contribution to knowledge.

By discussing your work with you directly and confirming that you fully understand your thesis, examiners can be confident that this is your own research.

Do all PhD students have to have a viva?

Almost always. One exception is for PhDs by publication (as the work in these will already have been through academic peer review). Some countries such as Australia and New Zealand also take a slightly different approach as their location makes it harder to invite external examiners for a face-to-face defence.

The viva format

Universities set their own viva voce processes, but most will follow a fairly similar format.

Before the exam

Many supervisors let you choose an external examiner . They need to have expertise in the topics you have researched, but not someone you have collaborated closely with during your PhD or who you have a strong personal friendship with (as these might create a conflict of interest).

Your supervisor will normally discuss possible options and then submit the invitation on your behalf. This usually happens just before you complete your PhD.

The next step is to submit your thesis . Nowadays most universities only ask for a digital submission which is sent out to your examiners for you.

The gap between submission and viva is usually one to three months. This allows time for both examiners to thoroughly read and consider your thesis and for you to prepare.

Your supervisor/s should offer to conduct a mock viva with you shortly before the real exam. They'll ask the sort of questions an examiner might have about your thesis so that you can practice answering and discussing them.

Your supervisor will normally meet with you before the viva begins to help you relax and ease any last minute nerves.

The exam room will be somewhere on your university campus that has been booked for the occasion. It will be laid out very similarly to a job interview, with space for you and the examiners to sit with your notes. Drinking water is also normally provided.

Most vivas are recorded and will begin with the internal examiner explaining the rules and regulations as a formality. Either they or the external will then begin asking questions about your thesis.

The examiners will usually help you relax and settle in to the discussion by asking something quite general, such as what interested you in this PhD project or what the most enjoyable part of the research was. Subsequent questions will be more specific, often referring the arguments made at particular points in your thesis.

The examiners will end the viva once they have completed their questions and feel able to come to a judgement. You will then be asked to leave the room whilst they discuss your performance and decide on a result to recommend. This normally takes around fifteen minutes or so.

After the viva

The next steps depend on your viva result. The examiners will invite you back in to explain their recommendation and provide general feedback on your work. This may include advice on whether or not you should seek to publish any of your PhD thesis and what sort of edits or further work might be required to prepare it for that.

Hopefully you'll then be able to celebrate with your supervisor, but they should be on hand to offer their to support and advise you whatever the outcome.

The majority of students have some corrections (usually minor) to make before resubmitting a final version of the thesis to be checked by the internal examiner. Once the final copy of your thesis is approved, you will be awarded your PhD! It's time to look forward to using your new title (and wearing some exceptionally elaborate robes at your graduation).

Viva preperation tips

It may feel like you're at the end of a long PhD journey by the time the viva comes around (and you are) but the oral exam is an important part of your doctorate and you should prepare accordingly.

Whatever else you do or don't do, listen to the advice of your supervisors. They'll have experience of all sides of the process, from sitting their own viva voce to preparing previous students for theirs. Chances are they've also served as internal or external examiners too and will know exactly what sort of questions they'd ask about a thesis like yours.

Here are seven tips for effective viva preparation.

#1 Take a (short) break first

Chances are you've been working very hard on your PhD recently, getting it written up, responding to feedback from your supervisor, making edits, sorting the bibliography (which you still left to the last minute, right) and getting the whole thing printed in time for the final deadline.

Whatever happens next, you've just successfully submitted a PhD thesis and you deserve a break. So take one.

A week or two away from your PhD will be ideal (no, don't take a copy of your dissertation with you). You'll get some mental rest and be in a better place to take a fresh look at your thesis and think clearly about it.

There's no need to feel guilty: the time between submission and viva is partly intended to make this possible.

#2 Read through your thesis

You may feel pretty familiar with your thesis by now but, actually, you aren't. You're familiar with a series of chapters that may well have developed separately over several years. It was probably only recently that you wrote them up in their final form, added an introduction and conclusion and turned the whole thing into a dissertation setting out your entire PhD thesis.

You need to know that thesis inside out and be completely familiar with the structure of the dissertation that contains and communicates it: which page a key concept or topic appears on for the first time, where key stages of your argument occur, where you cite or critique particular scholarship, and so on.

At the very least, this means reading your full thesis through at least once. Really though, you should be re-reading each chapter a couple of times and. . .

#3 Annotate key points

The PhD viva isn't a closed-book exam and you're expected to take a copy of your thesis with you. It's perfectly fine to consult it in response to questions, so make that process easy by annotating the most important stages of your argument.

There are lots of ways to do this, but, really, there's no substitute for sticking markers through your dissertation and scribbling in the margins.

If the copy of the thesis you take into the exam room looks like it's survived an explosion in a post-it note factory and then spent several years being read by rough-fingered undergraduate students in the library, well, you're on the right track.

#4 Note down potential questions (and answers)

You'll never be able to guess all of the questions that will come up at your viva, but you should be able to anticipate a few of them. Sketching out some bullet-point answers in advance will help you think critically about your thesis and boost your confidence going into the exam.

Spend extra time on any questions you're concerned about. If there's a point where your argument gets a bit strained or where you think your conclusions might be easy to challenge, have a think about how you'd defend them. Remember that your thesis doesn't have to be perfect, but you do need to be able to make a case for it – so practice doing that.

Incidentally, no one has been able to completely test the hypothesis that preparing for a viva question ensures it doesn't actually come up, but, well, the anecdotal evidence is strong. Prepare anyway.

#5 (Re)familiarise yourself with your examiners' work

The viva is about your thesis, but your examiners will have been selected due to the relevance of their own research and their perspectives will be at least partly informed by it.

It makes sense to consider how their work might inform their attitudes towards yours (this should also help you antitipate some questions, as above).

#6 Definitely take up the offer of a mock viva

Your supervisor/s should offer to arrange a mock viva with you shortly before the actual exam (once you've had time to prepare). This is a really helpful process.

The mock viva won't be anything like as long as the real thing and it won't cover every question your examiners will ask (or necessarily predict any of them). But it doesn't need to.

The most valuable feature of a mock viva is to get feedback on how you answer questions. Your supervisors will be able to spot whether you're coming across as too hesitant or too confident, or whether your answers are sufficiently clear.

#7 Try to enjoy it

Chances are you'll be sick of hearing this advice by the time your exam comes around, but it's true. A PhD viva voce really can be fun.

This is your chance to sit down with two experts in your academic field who have read and carefully considered your thesis and whose attention, for the duration of the exam, is entirely on your research. That's a privilege and it's one you've earned by getting to this stage.

Prepare effectively and give the viva voce the respect it deserves. But, once you get into that exam room, be confident, own your ideas and enjoy the chance to let them take centre stage in a serious academic discussion.

Viva results

The vast majority of PhD students pass their viva. By the time you're ready to submit your PhD you will be an expert in your subject area, more than capable of discussing and debating it. You'll also have done so many times before: at conferences, in conversations with your supervisor, and in your own writing.

Your supervisor will also ensure your thesis is ready for examination before they recommend you proceed to this stage. The only exceptions to this will be if you submit against the advice of your supervisor (never a good idea) or if you've over-run the time period for your PhD and have to hand in a thesis that isn't ready (you're unlikely to get to this point unless your PhD has been going badly for some time).

PhD viva outcomes

It's rare to fail a viva, but it's also rare to pass outright. Instead, most students are asked to make some corrections to their thesis.

Here are the possible outcomes of a PhD viva voce:

  • Pass with no corrections – (uncommon) – Your viva has revealed no significant issues with your thesis and the dissertation itself is error-free. Congratulations, you are eligible to receive your PhD now!
  • Pass with minor corrections – (very common) – Your thesis is essentially sound, but there are some minor issues with your dissertation (such as typographical errors, or missing references). You will normally have three months to submit a corrected thesis.
  • Pass with major corrections – (fairly uncommon) – There are some parts of your argument that need to be clarified, expanded or otherwise rewritten. You will normally have six months to submit a revised thesis, but won't need a second viva.
  • Revise and resubmit – (fairly rare) – Your thesis is potentially good enough for a PhD, but it needs some significant work, usually including some substantial additional research. You will have around a year to re-submit an improved and updated version of your dissertation for a second viva voce exam.
  • Be recommended for MPhil – (rare) – Your thesis isn't good enough for a PhD, but it is sufficient for an MPhil (a research Masters that doesn't require a substantial original contribution to knowledge). You may receive the MPhil outright, or after some edits and corrections.
  • Fail – (exceptionally rare) – Your thesis does not meet the required standard for a PhD (perhaps due to fundamental flaws in your data and analysis, or due to evidence of plagiarism) and it cannot be converted into an MPhil. You have failed your doctorate and cannot resubmit your thesis.

Those last couple of results may appear scary but, in practice, it's only a few % of candidates each year who don't pass with corrections. The only way a PhD is likely to fail outright is if you have run down the clock on your registration period, submitted a poorly written thesis based on insufficient data and probably done so against the advice of your supervisor/s. The entire PhD process is designed to prevent this happening.

So relax. The likelihood is that your PhD will pass with minor corrections (or better) and that your next challenge will be deciding what to use your new 'Dr' title on first.

Can you appeal a viva result?

If you think your viva outcome was incorrect or unfair, then you may be able to appeal it with your university. The first thing to do is check their guidelines and appeal process. Your students' union may also be able to support and advise you.

Note that you can't normally appeal on academic grounds . Your examiners' judgement is generally final. It is also difficult to appeal a PhD result if you submitted without the support of your supervisor/s or have otherwise ignored their advice at other points in your project.

You may have grounds for appeal if you can demonstrate that you have been poorly advised or supervised (you will need evidence of this and of the specific impact it has had) or if there was an irregularity in the conduct of your viva (such as interruptions, an unsuitable venue, or a lack of consideration for relevant disabilities or health conditions that may have impacted your performance).

Common viva questions

The questions your examiners ask will obviously be very specific to your thesis and anticipating them is a big part of your specific viva preparation . There are a few things that are likely to crop up more often than not, though.

Here are some example viva questions , along with some tips for answering them well.

"Why did you choose this PhD project?" / "What interested you most about this topic?"

This is a classic icebreaker: it's an invitation to speak generally and positively about your work. As well as being a fairly easy question to answer (after all, there must be at least something you enjoyed about your PhD) this should also help you channel your passion and enthusiasm for your research as the viva gets going.

"What was the most challenging part of the project?"

This probably won't be the first question you're asked, but it might also come up early in the viva as the examiners ease you into talking about your project. It doesn't mean that they think your PhD is flawed. All research involves overcoming obstacles. This is an invitation to talk about how you did that and reflect on the practicalities of your project.

"What is the original contribution to knowledge made by this thesis?"

This question is highly likely to come up at some point in the viva and it's one you absolutely must have a clear answer for. You should be able to explain in one or two sentences what your contribution is, how it's original and why it matters.

Some examiners might not be so explicit or direct in asking this, so be on the lookout for questions like "why is this PhD important?", "why was this project worth completing?", "what were your main findings?" or "why does this research matter?". If you hear any of those, it's time to deploy the original contribution answer.

"Why did you include / exclude X?"

All doctoral projects need to be selective about what they can and can't include, and successful PhD students need to set boundaries for their research. At some point your examiners will probably want to see the logic behind yours.

Be confident and own your decisions. If there was a particular topic or approach you didn't include, then give your reasons for that.

Remember that there are lots of reasons why something might not make the cut for a PhD and the examiners aren't trying to catch you out. They don't even need to agree 100% with your decisions, but they do need to hear that you had credible reasons for making them.

It may be that there wasn't space to cover everything (in which case you should justify prioritising the material you did include). Or perhaps you felt that there was already sufficient scholarship related to a particular source or concept and your aim was to take the field in a different direction (this is a very good answer, if you can make it convincingly).

"If you were to repeat this project, what would you do differently?"

This question (or one like it) may come towards the end of the viva as you reflect on the project as a whole.

Again, the aim isn't to try and undermine your thesis, but rather to see whether you can constructively critique your own work and approaches. Or, to put it another way, have you learned anything from the experience of doing a PhD? You should have. After all, a doctorate is partly about learning to become an effective researcher and mistakes are a great thing to learn from.

In any case, this shouldn't be too hard to answer. There are likely to be all sorts of things you would do differently in future: from adopting different approaches or directions sooner, to heading off blind alleys or methodological mistakes.

"What do you think the next steps might be for this research?"

Relax, your examiners aren't expecting you to dive straight into another PhD. But they may want to hear where you would take this research next, or what you think other scholars could do to build on your findings. After all, part of the value in a new contribution to your field should lie in what it makes possible, as well as what it is .

It's best to be modest and realistic here, rather than making sweeping claims for how your findings will allow other researchers to reinvent the wheel (unless you have actually come up with a new technique for designing wheels, in which case, go ahead).

"Do you have any questions or comments for us?"

Your examiners will probably end the viva by asking if you'd like to ask them any questions, or say anything else about your thesis. This might seem a bit odd, but it's actually a helpful way for you to revisit or clarify any of your earlier answers.

For example, you might like to acknowledge a specific critique and reiterate your reasons for believing the thesis to be valid in spite of it. Or you might want to confirm that the examiners understood what you meant at a particular point in the previous discussion.

It's not a good idea to try and rehash large chunks of the viva here, but it's fine to pick out one or two things and be assertive. This demonstrates your confidence and commitment.

Equally, you can take the opportunity to ask the examiner's opinions on areas of the thesis that haven't come up, if you wish. This is fine, provided you're confident in those sections and comfortable discussing them.

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Academia Insider

What is a viva? PhD viva, viva voce, viva process and more

If you are a PhD candidate and preparing to take the biggest step in your academic journey, you might be overwhelmed by the thought of your impending viva voce or the oral defense of your thesis.

Worry not, we are here to demystify the process and provide you with actionable tips to successfully navigate this crucial academic milestone.

Here, we will guide you through the viva process, shed light on the perspective of your examiners, and help you understand how to prepare for this pivotal examination. 

Whether you’re just beginning to wrap your head around what a viva entails or are already deep in the trenches of preparation, this blog is designed to offer you comprehensive, step-by-step guidance.

By understanding the process, expectations, and preparing effectively, you can walk into your viva with confidence, ready to defend your thesis and demonstrate your deep understanding of your research area.

What is a PhD viva or viva voce?

A PhD viva or viva voce is an oral examination where you defend your thesis in front of internal examiner(s) from your institution and/or external examiner(s) from another institution specializing in your subject area.

how long are phd vivas

There may be up to 5 people on your viva panel. 

They are testing your knowledge and thought processed to be admitted into the degree.

Typically lasting for an hour and a half to two hours, the viva is a conversation between experts, giving you the chance to elaborate and clarify your research.

Preparation for the viva can involve ongoing conversations, with supervisors and focused development after thesis submission.

As the viva voce derives from the Latin for ‘living voice,’ let your passion for your research come alive in your defense.

As nerve-wracking as it might be, remember to relax and use this opportunity to share your contribution to your field. 

Supervisors will (or at least should) conduct mock vivas to help you prepare for questions and build confidence. Ask for a mock viva if one is not offered by your supervisor. 

During the viva, your supervisor may be present as a silent observer, ensuring examination conduct.

Outcomes of a viva range from:

  • passing without corrections,
  • passing with minor or major corrections,
  • or not passing at all.

Examiners won’t necessarily spot all mistakes, but they read your work thoroughly, engage in a comprehensive discussion, and submit independent reports before the viva.

Understand what’s expected of you in your viva (Examiner point of view)

From an examiner’s point of view, in your viva, you are expected to confidently explain and defend your thesis.

You should be well-prepared, recognizing that examiners will carefully read your work and may identify minor mistakes.

Keep in mind that examiners may not know your thesis as well as you, so be prepared to clarify and elaborate on your research. 

They may ask some really simple and basic questions of you – particularly early on in your thesis defense.

It is essential to demonstrate your understanding of the topic and address any questions posed by the examiners.

You may have the option to include your supervisor or other supportive figures from your institution during the viva for moral support and to witness the examination’s conduct.

Understand that examiners typically work independently and exchange reports just before the viva, so be ready to engage in a comprehensive discussion about your work.

Focus on showcasing your:

  • research abilities, and
  • significance of your thesis

during the viva.

How to prepare for your viva exam

To prepare for a PhD viva, follow these actionable steps:

1. Familiarize yourself with your examiner’s and supervisor’s work (4-5 days): Know their research interests, potential biases, and recent publications, and consider how they might relate to your thesis.

2. Understand your thesis deeply (5-6 days): Be able to explain your research question/hypothesis, aims, theoretical framework, methods, and key results concisely. Review all the papers you discussed or mentioned in your thesis, noting their relevance to your work. Address any weaknesses in your analysis, and justify your study’s merit to earn a PhD.

3. Practice summarizing your thesis: Prepare a 200-word summary of each chapter and a 2-minute explanation of your whole thesis. Be ready to clarify your work in one or two sentences.

4. Anticipate general questions : Examples include summarizing your thesis, stating your research question or hypothesis, and discussing your main results. Prepare answers for potential questions from both a general and discipline-specific context.

5. Conduct mock vivas with your supervisor: Simulate the viva experience to get comfortable with the format, build confidence, and receive feedback on your performance.

6. Review general questions and answers (last 1-2 days): Brush up on your prepared responses and make any necessary final adjustments.

Remember, most PhD students pass their viva, so focus on preparing and confidently discussing your research.

Things to keep in mind during your viva – top tips

Here are the top tips to keep in mind during your viva:

how long are phd vivas

1. Ask for clarifications if a question is unclear. Be polite and ensure you understand the question before attempting to answer it.   2. Don’t interrupt the examiner while they are asking a question. Give them time to finish, as it shows respect and allows you to fully comprehend the inquiry.

3. Be honest if you don’t know the answer to a question. Prepare a polite response for unexpected questions you cannot answer.

4. Maintain confidence without arrogance. Display a level of nervousness that reflects your dedication to the process, but avoid overconfidence or disrespect.

5. Keep your answers concise and structured. Use a clear format when providing your response, such as breaking it down into key points.

6. Speak at a moderate pace. Avoid talking too fast or too slow, as it can be distracting for the listeners. Practice controlling your speech rate during your preparations.

7. Give yourself plenty of time before the defense to prepare and relax. You should be in the right state of mind for your viva.

8. Be familiar with the protocols, format, and panel of your viva. Attend other thesis defenses, read your institution’s guidelines, and research the background of the examiners on your panel.

By following these tips, you can enter your viva well-prepared and have a successful defense. Enjoy the experience and demonstrate the hard work you have put into your research.

Wrapping up – thesis viva

Concluding our comprehensive guide on the viva process for PhD students, the final thought we leave you with is this: your PhD viva, or viva voce, is an opportunity to defend your research, a unique chance to demonstrate your motivation, strengths, and even your limitations as a researcher.

It’s important to understand the viva definition in its entirety: a viva voce is an oral test undertaken in front of a panel of examiners.

This panel usually includes one internal examiner from your institution and one external examiner from another. It may also include other experts depending on policies and practices.

Preparation is key when you get to the viva stage.

To that end, arranging a mock viva with your supervisor could help you anticipate the types of questions you’ll be asked. This practice could enable you to put your best foot forward during the real deal.

Don’t be surprised if the viva examination lasts anywhere between one and four hours.

You may be asked to elaborate on your PhD thesis, defend your field of study’s claims, discuss its strengths and weaknesses, and suggest future research opportunities. Your response to the assessment task should be in-depth and thoughtful.

Under the current COVID-19 conditions, many students are having their viva over Zoom or Skype.

In these cases, it’s important to arrange your setting to minimise distractions. Feel free to ask for clarification if the audio cuts out or you miss a question.

In preparation for your viva, review the academic profiles of your panel members, anticipate questions they might ask, and keep a copy of your thesis at hand.

Also, remember that while it’s important to provide an in-depth response, a concise explanation is ideal to avoid going on a tangent. If you’re asked about any weaknesses or limitations in your work, be honest and thoughtful in your response, highlighting your problem-solving skills as a researcher.

You’ve worked hard to reach this stage; now it’s your chance to shine! Best of luck!

how long are phd vivas

Dr Andrew Stapleton has a Masters and PhD in Chemistry from the UK and Australia. He has many years of research experience and has worked as a Postdoctoral Fellow and Associate at a number of Universities. Although having secured funding for his own research, he left academia to help others with his YouTube channel all about the inner workings of academia and how to make it work for you.

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The Savvy Scientist

The Savvy Scientist

Experiences of a London PhD student and beyond

What is a PhD Viva Like? Sharing Graduates’ Experiences

My PhD Viva

When you’re trying to prepare for a PhD viva it can be really difficult to know what to expect. Unlike pretty much every other exam you’ll have experienced, the viva isn’t a standardised exam so you won’t find any past papers to practice on!

In this post I’ll be sharing the inside scoop on what a PhD viva is like. Both from my own experiences plus those of a few other PhD graduates.

Preparing for your viva? You may also want to take a look at some of the other PhD viva content I’ve written:

How to Defend a Thesis: An Introduction to the PhD Viva

Common phd viva questions.

Note: Every viva is different, in this post I’m focussing on my viva which took place in the UK. Two PhD graduates in Spain and the US also share their experiences.

What is a PhD viva?

For those who aren’t already familiar with what a PhD viva is, I’d highly recommend reading my full post on How to Defend a Thesis: An Introduction to the PhD Viva . This delves into how a PhD viva is assessed, who is present, the potential outcomes and what follows after.

As a quick recap, a PhD viva (also called a defense in some countries) is the final assessment a PhD student undertakes in order to pass their PhD. The format the viva can take varies from country to country and even institution to institution, but it typically involves discussing and defending your PhD thesis with experts in your field.

In this post you’ll hear about the viva experiences of three PhD graduates, each with a slightly different format.

To get the best understanding of how PhD vivas take place at your university I’d recommend:

  • Checking out any webpages your university have which formally outline the viva process
  • Speaking to your PhD supervisor
  • Chatting to colleagues such as postdocs who’ve been through it

Viva Experiences from PhD Grads

Prof elizabeth bondi-kelly , phd from harvard university, usa. assistant professor in computer science at university of michigan.

Portrait of PhD grad Dr Elizabeth Bondi-Kelly

What was your PhD viva like? At my (virtual) defense, I had my committee, adviser, labmates, and family/friends. I was fortunate to give my job talk presentation again for my defense, so I had already had a lot of practice with presenting it and being asked questions about it.

How do you suggest people prepare for their PhD viva? For anyone who hasn’t had that opportunity, I highly recommend practicing to get a polished talk and practice answering questions about it.

Prof Raúl Santos-Rodríguez , PhD from Universidad Carlos III de Madrid, Spain. Full Professor in AI at University of Bristol.

What are PhD vivas like in Spain? The viva process in Spain varies from university to university. In most cases there are a few previous filters (internal/external reports) that make it such that, once you are through those, most of the pressure is off for the actual defence. The viva consists of a public presentation (usually with colleagues, friends and family in the audience) followed by questions from a panel, with each member asking their questions in turns. Both presentation and Q&A tend to be time limited (around 45 minutes each). 

What was your PhD viva like? My viva experience was nerve-wracking but rewarding too. I remember how the exercise of putting together the presentation with the panel in mind actually gave me quite a different perspective on how to tell the story of my thesis. The event took place in a rather formal lecture room in our faculty. The panel consisted of five examiners (three externals including one from abroad, and two internals), all of whom were experts in my field of study. The panel asked me a wide range of questions, covering both very specific details and very high level matters. Once I answered their questions to their satisfaction, and after a short deliberation, I was given the good news. Overall, I found the viva to be a challenging but stimulating experience — and a good memory.

How do you suggest people prepare for their PhD viva? In terms of advice, I would suggest to:

  • Expect to be surprised by unexpected questions about your research
  • Be clear and concise, allowing examiners to ask for more details if needed
  • Practice your presentation without being constrained to say the same things every time
  • Not be afraid to ask for clarification if you don’t understand and take your time to respond
  • Enjoy the interaction with the examiners as they are experts that have a lot to add to your work

Portrait of PhD grad Prof Raul Santos-Rodriguez

Me! PhD from Imperial College London, UK. Research Fellow in AI at Bristol.

Portrait of PhD grad Dr Jeff Clark (me)

What was your PhD viva like? My viva, which took place over Microsoft Teams, included just an internal examiner, external examiner and myself. I gave a short presentation giving a summary of my PhD then about five hours were spent giving suggestions to improve content I was preparing to submit to journals. It was much less intimidating than I was expecting.

How do you suggest people prepare for their PhD viva? I mainly suggest to not over prepare! Sure, reread your thesis and swot up on any content you don’t feel comfortable describing (for instance certain techniques you’ve used), but I would caution against rehearsing too much: come to terms with the fact that you won’t be able to predict all the questions you’ll get asked.

I’ll be sharing more details on my viva experience in the rest of the post.

How To Prepare For a PhD Viva: The Advice I Was Given

Ahead of my own viva I typically got told to:

Relax and take your time in replying . This is somewhat sensible advice but a bit like telling someone to calm down: it doesn’t always work. Furthermore, relaxing can be hard to do when you also get told to…

Be prepared to answer questions about every part of your work . At face value this can seem reasonable: if you did the work, and deserve a PhD, you should be able to explain your work. Like many of us I heard the horror stories of examiners asking students to provide an explanation of fundamental techniques from first principles such as: “derive energy”!

However, I don’t think any rational examiner can expect a student to be able to answer every possible question about their PhD work. Not least because many students aren’t relaxed during the viva and instead are filled with nerves.

Thankfully, the reality is that examiners simply need to check that you’ve done the work and understand it. Therefore, yes you should be able to give a broad explanation of the techniques you’ve used but you can’t be expected to know everything about every technique.

Once it strays from your work to underlying principles I suggest that you explain as much as you feel comfortable then push back – the internal examiner (who acts as a moderator) should also step in if unreasonable questions are being asked. For more details on what PhD examiners are looking for, read this section of another post I’ve written .

How I Prepared for My PhD Viva

The time between submitting my thesis (14th February) and viva (25th March) was shorter than for most people. On top of that I didn’t spend long writing my thesis, meaning that the time between finishing my actual research and my viva was pretty short (around two months). Therefore I didn’t feel the need to “revise” for my viva. As in, sometimes you’ll hear of people reminding themselves of how certain experimental or analytic techniques work, but it was pretty fresh in my memory.

Instead, about 48 hours before my viva I started to read through my thesis. This is going to sound really bad but this was actually my first (and only) time properly reading through my thesis. No, I didn’t outsource or use ChatGPT to write my thesis!

When I submitted my thesis I had of course assembled all the chapters but had never given it a proper cohesive read all the way through. I read through the thesis over the course of 4-5 sittings. Reading fiction is definitely more fun .

I personally didn’t prepare by trying to come up with answers for lots of potential questions. But if you’re keen to have those to hand, read my Common PhD Viva Questions .

Preparing for your own viva? I’ve created a set of viva preparation worksheets which are available for free in the resource library. Click the image below for access!

Image showing free viva preparation worksheets which can be downloaded from the resource library

Why didn’t I prepare more?

I felt pretty relaxed about my viva. This isn’t because I am crazy clever or knowledgable. In fact, like many of us I’ve felt imposter syndrome, waiting for the moment that my lack of knowledge gets discovered: and if there ever a moment you’d expect this to happen it would be at your viva.

These three things relaxed me for the viva:

  • The external examiner seemed nice from the time I’d met him in the past at a conference. Certainly not a sure-fire sign that he wouldn’t turn into a scary beast during a viva but it seemed like a good starting point.
  • It was virtual. My viva took place right at the start of COVID and as such took place over Teams. For some reason this felt reassuring, as if I could get away with just unplugging my internet connection if they asked anything particularly scary. Thankfully I didn’t ever feel the need to try this out!
  • I had published PhD work in a well-ranked respected peer-reviewed journal. This was far and away the most reassuring thing. As mentioned in another post, examiners have to be confident in all of the following things to let you pass your PhD viva. If you have published some of your work somewhere respectable you tick many of the boxes immediately:

how long are phd vivas

Oh, and I also didn’t prepare much because I was preoccupied with moving from London the week before my viva because of COVID and the start of lockdowns. Unexpectedly I ended up moving in with my girlfriend’s parents. It was rather chaotic but probably a useful distraction too.

Photo of the cluttered spare bedroom where I had my PhD viva: a tiny desk with laptop near a bed and lots of belongings

My PhD Viva Experience

Who was at my viva.

Unlike vivas in other countries, such as the two international experiences shared above, a viva in the UK usually only involves:

  • PhD student – me in this case!
  • Internal examiner – an academic working in the same research area from the host university. They’re there to moderate the discussion and check that the university’s viva regulations are followed.
  • External examiner – another academic working in the research area from a different university. In my case this was someone who was a leader in the field who came from another UK university.

Optionally the PhD student may ask their supervisor to attend. I’ve known of a few people who’ve had their supervisor there too, though it’s pretty rare and unnecessary in my opinion.

How long did my PhD viva last?

All in all it was about five and a half hours.

This was much longer than I anticipated. When we scheduled the viva to start at 10am I naively expected us to be finished by lunch. Admittedly the examiners did suggest stopping for a break at lunch time but again I naively thought we’d be done shortly afterwards, so declined the opportunity for more than a 5 minute comfort break. In the end we finished up around 3:30pm.

How was my PhD viva structured?

Pie chart showing the four sections of my PhD viva: as described below

  • Introductions (2 minutes) . I’d actually never met my internal examiner (who should act as a moderator) so introductions were necessary.
  • Presentation (10 minutes) . A few weeks in advance of the viva I asked whether or not the examiners would like a presentation, and if so of what length. They said yes, 10-12 minutes. My supervisor strongly suggested making it on the shorter side: short and snappy is good and you’re about to have hours to discuss the details.
  • Discussion (5 hours, yes, really!) . More on this in a moment.
  • Decision and final comments (10 minutes) . I was asked to leave the metaphorical room (Teams call, remember!) and after a few minutes was invited back in after which they told me I’d passed with minor corrections. They gave a summary of the next steps, which were mostly administrative with paperwork, and briefly went over what changes/corrections they were expecting to the thesis.

What did we discuss for five hours?

Before my viva I had visions of it being like a job interview that lasts for hours and hours. They ask a slightly tough or awkward question, you try and answer, rinse and repeat x 100. The reality was really different.

The experience was much less intense than I was expecting. The examiners said from the outset that they were happy with the quality of the work and just aimed to give feedback to improve both the thesis and publications.

The vast majority of the viva was spent going page by page through the thesis covering points that the examiners had written down: not questions, merely suggestions. Very little of the viva involved me getting questioned: most of what I said was probably along the lines of “I agree, that’s a great idea”.

The examiners commented that they liked the [short] length of the thesis (140 pages before references) which may have helped. I was expecting at least a few dodgy questions such as explaining the content of a particular reference or deriving something from first principles. In all honestly I’m not sure I’d have been prepared for some of this, so was fine with not getting a hard time of it.

There were very few questions in general which was somewhat of a relief, though I was kind of looking forward to more of a discussion around the project. There were only two actual questions I think I got asked: one explaining why a particular technique wasn’t representative, and secondly a much more fluffy question of what would I do differently if I was starting again. That was it. I was really expecting more questions.

Every viva is unique so I can’t claim that my experience is representative but I will say that it was a relief to get through it unscathed.

What I wish I’d done differently

Asked more questions myself . The viva is one of the few times you’re likely to have hours of access to academic experts with such a keen interest in your work.

Was it tiring?

A little, just as any meeting which lasts over five hours would be. But because I didn’t feel like I was actually getting quizzed the whole time it was nowhere near as tiring as it could have been. Mostly I was tired just from having to pay attention for that long: I usually don’t sit still for more than 20 minutes!

What happened afterwards?

My viva was in March 2020, at the start of lockdown. I’d moved from London just the week prior and had to cancel the scheduled celebratory drinks with colleagues. So instead I had a glass of champagne with my girlfriend and her parents (who I was staying with).

Photo of me smiling with a glass of champagne after my viva

After that, I got cracking right away the next morning on making the examiners’ suggested changes to my thesis.

My Advice If You’re Preparing For Your Own PhD Viva

  • Download my free viva preparation guide .
  • Read your thesis!
  • Look up likely questions (if you want), here are some Common PhD Viva Questions
  • Don’t over prepare
  • Be honest. If you’re not sure about something, make this clear. Feel free to say you’re not sure.
  • Ask questions
  • Enjoy it! Channel those nerves as excitement and make the most of having experts show such an interest in your work.

Do you have any other questions about the PhD viva experience? Let me know in the comments and I’ll answer them as best I can!

If you’d like personalised help with preparing for your PhD viva I am now starting to offer a small number of one-to-one sessions. Please contact me to find out more or click here to book a call.

If you’re currently preparing for your own PhD viva, best of luck and remember to enjoy it! Be sure to check out the couple of other viva-related posts I’ve written .

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Five top tips to pass your PhD viva

Research assistant Kirsty Devaney , who successfully completed her doctorate , provides five invaluable pieces of advice on passing the PhD viva.

First thing's first...what is the PhD viva?

Officially called the viva voce , meaning ‘living voice’ in Latin, the viva is an oral examination that sees a PhD student defend their thesis and showcase their knowledge to a panel of academic experts.

The viva takes place after you have completed your thesis and sees these experts ask you various questions to ensure you understand your work and have become an expert in your field.

Now, over to Kirsty…

1). Make your own learning space

"It's important on the lead up to the viva voce to have a space that's designated for your preparations. This could be at your university, in a coffee shop or at home.

"For instance, I took over my dining room table for a good two months. I had all of my resources there - my books, my thesis and lots of post-it notes."

2). Take some time away from your thesis

"I had a three-month wait in between submitting my thesis and sitting my viva, but I knew I couldn’t spend that time prepping as it would be far too intense. I took a full month off from revising and returned with a clear idea of what I needed to do."

3). Make a plan of action

"A month before my viva, I made a list of things I wanted to achieve before the day.

"One was to read through my thesis in full three times. I also committed to tabbing all of the important chapters, diagrams and data in my thesis, so I could refer to them quickly if needed.

"I then compiled a series of questions which I thought might come up in the viva and put them all into a pot. Once I’d got enough questions, I’d ask my husband to pull out one of the pieces of paper at random and ask me the question. 

"Some days I would also catch up on any recent literature I may have missed that could be relevant.

"All of this proved incredibly useful for when my viva arrived."

4). Know your examiners

"When you’re close to completing your doctorate, you might have a conversation with your supervisors about the people in the field who might be external examiners.

"Once you know who they are going to be, it’s really important to get to know their research, what their research interests are and what methodologies they use."

5). Become the expert

"BCU does a mock viva, which I found incredibly helpful as it meant I could work on any difficulties I faced.

"One issue that arose from my mock was that I had to become a lot more confident and assertive about my research and my findings.

"When you walk into the room to do your viva, you are making the leap from being a student to having the certainty of an expert."

How scary was the PhD viva?

Kirsty, who also runs the successful Young Composers Project , says it’s important not to be too fearful of the examiners.

"They are there to challenge you, but they’re not trying to be mean for the sake of it,” she explains. “They want to make sure you know your stuff and haven’t just plagiarised the material.

"However, it’s important to breathe and take your time – they’re not expecting rapid-fire responses."

Kirsty credits the support of the  School of Education and Social Work  for getting her through her PhD.

"They really got it right,” she says. "They have been incredibly supportive. I never felt alone."

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5 tips for passing your PhD viva

Every Doctoral researcher is expected to defend their thesis through an oral test known as a viva voce - so discover how to prepare for your PhD viva and ensure you make a good impression on the examiners

1. Understand what's expected of you

The PhD viva exam has traditionally always taken place in person, with the interview style discussion overseen by at least two (internal and external) examiners. Afterwards, you would be provided with a joint written report detailing any corrections that need to be made.

However, during the pandemic, the online PhD viva become more commonplace with this exam more likely to take place via Microsoft Teams, Skype or Zoom. Even now, a number of years later, many universities still allow for the viva to take place online, or a hybrid of online and in-person assessment.

The virtual experience still follows much the same format, but you'll be briefed in advance about the arrangements and any technical aspects to bear in mind. You can prepare for an online PhD viva by reading our video interview tips .

The chair of the viva is usually the internal examiner, although it can be an independent person. If you and the examiners agree, your PhD supervisor can also be present.

The examiners' main objective is to ascertain that you've written your own thesis, so if you have and are ready to talk through how you completed it, there's no need to panic. You may even enjoy the viva voce test.

In addition to assessing your thesis, the examiners are also there to assist you in deciding how and where this research might be published.

There are various results between a 'pass' and 'fail' but it's very rare to slip up at this point of a PhD. Most Doctorate awards will be made upon the condition that a number of minor corrections are made, with re-submission requests far less common.

While the pass rate is high, the viva exam itself can still be intellectually demanding. This is because you'll be debating issues that are conceptually complex, so preparation is crucial to your success.

At the end of it, whatever the outcome, be prepared to take on board any advice, as the examiners are there to help you improve your argument or the presentation of your thesis.

2. Know your thesis inside out

While this isn't a memory test - as you're fine bringing notes and a copy of your thesis with you - it's still important to gain a good understanding of what you've written and be knowledgeable about your field of study.

You'll need to think carefully about where this original piece of work would be placed in the context of the wider body of research carried out in this field. Questions will be asked about this, as well as whether the project could possibly be developed further through any future research.

As you'll be explaining parts of the document to the examiners (who'll also have a digital or physical copy), make sure the pagination is the same in your version as the one they're looking at to avoid any issues regarding everybody being on the same page.

If you get stuck at any point during the viva exam, you can use looking at the thesis as an excuse to re-focus and gather your thoughts.

3. Anticipate the PhD viva questions

The examiners will have prepared a series of questions for you to answer at the viva voce, but this is nothing to get too concerned about. The questions will all be based on your thesis - what it's about, what you did and what you found out - and why this matters, in relation to your field of study.

So when getting ready for the viva, consider the types of questions you're likely to be asked, including:

  • What original contribution has your thesis made to this field of study?
  • Explain the main research questions you were hoping to address.
  • What are the strengths and weaknesses of your thesis?
  • If you had to start the thesis again, what would you do differently?
  • If funding was no object, describe how you'd follow on from this project.
  • What are your plans for the future?

It can be helpful to practise your answers beforehand, ideally vocalising them by arranging a mock mini viva - although, as you aren't restricted in terms of referring to notes in the exam, you can leave room for spontaneity, and you don't need to learn it all off by heart.

If your viva is being held online, you can ensure any technical issues are identified before the day by having a run through with your supervisor or a friend.

While it may sound simple, stick to answering the questions posed. It's really easy to go off on a tangent and this can open up other lines of enquiry from the examiners - possibly in areas you hadn't expected to be quizzed about.

On the other hand, it's completely fine to bring personality to your reasoning and use stories as a means of describing the learning process you've gone through and the techniques mastered over the last three or four years that have brought you to this point.

4. Learn about your examiners' own work

The senior and well-respected academics who'll be reading your thesis will have their own ideas on conducting PhD standard research. Therefore, it's worth taking a look online at their academic and LinkedIn profiles to discover if there's any correlation with the research they've had published and your own work.

From this, you should be able to gain a better idea of their motivations, their possible views on your thesis and the kinds of questions they might wish to discuss after having read through it.

You should research up-to-date theories, read any recent papers on the subject and speak to others who've recently had their own viva exam. Think about how your work differentiates from the research carried out by others in your chosen field.

Prepare to provide any supporting evidence asked of you by the examiners - for example, they may request to see experimental data you mention once the exam is over.

It's also necessary to check the policies and practices in place at your university and be sure of what the roles of the examiners are and how the viva panel will be structured. In many cases, Doctoral students can choose the examiners conducting the PhD viva.

5. Plan towards the viva exam

From the moment you know the date of your viva voce, work backwards and plan the steps you'll need to take before the day itself. Allow enough time to assess and review your work so that as the day approaches, you can focus on the practicalities.

This encompasses everything from making sure you relax, eat and sleep well the day before to arranging transport so you get to the viva on time.

An online PhD viva will present its own challenges, so ensure your working space is presentable and you still make an effort in terms of what you'll be wearing.

It's always advisable to adhere to interview etiquette and go with something that's both smart and comfortable. By looking the part, this should get you in the right frame of mind to communicate in a professional manner.

In the build-up, avoid any situations that might make you feel stressed and instead try to adopt a positive attitude, one that results in a genuine eagerness to engage in a debate about the work you've been toiling over.

If you're travelling to the exam, be sure to check that you have everything you need, including the thesis, plus any notes or other materials that will help support your claims.

The Doctoral viva can last between one and four hours - usually two - so it's necessary to pace yourself to get off to the best possible start.

Remember, the examiners aren't trying to trip you up - they want you to pass and are primarily there to hear you talk about your project. So, after the polite introductions, they'll typically start with an icebreaker to put you at ease and help calm the nerves.

It's meant to be an open and honest conversation about your work, so feel free to politely disagree with the examiners, especially on areas you feel strongly about. Don't forget to use examples from your thesis to back up what you're saying, remembering to be clear and concise.

If you know your way around your thesis and can explain your thinking and way of working, this test shouldn't be a problem. And if you don't know the answer to a specific question - admit it, as it's better to concede your limitations in an area than ramble on and hope they don't notice you're struggling to come up with an explanation.

Remember that no research is perfect, so it's important to appreciate this during the discussion - but don't be too overcritical about your work either, as that's not your job.

Finally, as the PhD viva can quickly move from a series of friendly questions to those that are more in-depth, take some time to think before answering. Don't worry about any periods of silence from the examiners, as this certainly isn't an indication that you're doing badly.

Find out more

  • Read about 5 challenges faced by PhD students .
  • Explore possible careers at your PhD, what next?
  • Consider getting an academic job .

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What is a PhD Viva?

  • Maisie Dadswell
  • September 6, 2023

how long are phd vivas

After you have written and submitted your PhD thesis, the next stage in the process is to pass your PhD viva examination, which your PhD supervisor at UWS London will fully prepare you for. Your viva will happen within three months of submitting your thesis; after completing your viva, you will know if you have passed with flying colours and can call yourself a doctor in your respective field. Though the prospect may sound daunting, see it as the chance to prove that your creative knowledge makes you a peer to the academic panel that will be present for your viva; it is the perfect opportunity to establish yourself as an intellectual authority in your field. 

This article will cover what a viva is, how it works, what the potential outcomes are, who will be present on the panel and provide some helpful tips that are relevant for all fields of study.

Doctor of Philosophy (PhD) degree is the highest academic degree one can earn in most fields of study. It typically involves conducting original research, making a significant contribution to the field’s knowledge, and writing a dissertation or thesis that demonstrates expertise in a specific area. Learn more about PhD at UWS Londo n here .

A PhD viva also referred to as a Viva Voce, Latin for ‘living voice’, is an oral examination which follows the submission of your doctoral thesis, where you will showcase your knowledge and defend your research in front of a panel comprised of academic experts. This examination is compulsory for the vast majority of doctoral students.

PhD Viva Questions

All the questions asked during your viva will assess: 

  • Your knowledge depth in your specific area of research. 
  • How deep your knowledge is concerning the broader research field relevant to your PhD. 
  • If you can place your work in a broader context. 
  • If you can demonstrate how your research contributes to your field. 
  • If you know of any potential limitations and oversights in your work – where applicable. 

If the panel has any suspicions that your work may not be your own, they may also question the authenticity of your work.

How Long Does a PhD Viva Take?

One of the most frequently asked questions is how long is a PhD Viva. The average length is around three hours, but several factors can extend or shorten your oral examination. If there are issues in your PhD thesis or if it is poorly presented or formatted, this could lead to confusion on the panel, which will necessitate more clarification for you to set the record straight and prove that you understand your field of study. Similarly, how well-prepared you are and how concisely you respond to questions will also have a bearing on the duration of the viva. 

However, lengthy PhD defences don’t always need to be a sign that it is going poorly! Your examiners may enjoy the discussion enough that they will want to talk about it long after they have concluded that you have passed the examination. Even though, in some rare instances, a viva can take up to eight hours there may be university or country-specific rules on maximum duration – feel free to discuss this with your PhD supervisor beforehand.

Who Will Be on Your Viva Panel?

Your PhD examination will be carried out by one examiner from your university and an examiner from an outside university. Your PhD supervisor may also be on the panel, although this is not always the case. If you do find your supervisor on your viva panel, in the UK, it is common that they are prohibited from speaking. If they are present, they will solely act as observers. 

Together, the examiners will highlight what they found when reading your PhD thesis thoroughly, focusing on the theories and key concepts you put forward in your research. To ensure that the examiners are being fair and appropriate in the viva process, there is also usually a chairperson on the panel who takes notes documenting any notable suggestions or comments. The chairperson will either be internal or external from the university.

What Are the Outcomes of a Viva Exam?

In the UK, there are six potential Viva PhD outcomes. We have listed them below from the best outcome to the worst. However, it is worth bearing in mind that even if you need to make minor or major corrections after your viva, you will be given equal credit as someone who was awarded their PhD degree without corrections.

The average pass rate for a PhD viva in the UK can vary depending on the university, field of study, and specific criteria used for evaluation. However, it is generally quite high.

In many UK universities, a significant majority of candidates who reach the viva stage pass, often with some amendments required. A “pass with minor amendments” is a common outcome, indicating that the candidate has demonstrated a sufficient understanding of the research. Recent research on viva experiences indicates that 84% of Ph.D. candidates are required to make minor revisions in order to achieve a passing grade.

1. Awarded PhD Degree with No Corrections

It is rare for students to pass their PhD degree without any corrections. So, if this is your outcome following your viva, celebrations are in order! It means you have seriously impressed your examiners with your research and examination.

2. Minor Corrections Required to Pass

Recent viva experience research has highlighted that 84% of PhD candidates must make minor corrections to pass. Typically, the minor corrections will be small issues with the thesis, such as grammatical errors, typos, typograph issues, or presentational faux pas, which can be quickly edited. Don’t be disparaged if you are presented with this outcome following your viva; it still means that you have done remarkably well with your thesis and viva.

3. Major Corrections Required to Pass

This outcome is the second most common following a viva; it means you have met the required standard to be awarded your doctorate, but some revisions or corrections need to be made. Typically, this will involve you improving the structure or clarity of your thesis by rewriting chapters or adding additional analysis. Once again, needing to make major corrections shouldn’t be seen as a failure; although it may be disparaging, it doesn’t invalidate your research or contribution to your field.

4. Revise and Represent to Pass

You will be asked to revise and represent your work if the panel can see the potential within your work and that it can meet requirements if you undertake additional research or analysis. You will be presented with this outcome if your work doesn’t quite reach the PhD degree standard; unlike with the minor and major corrections outcomes, if you are asked to revise and represent, you will need to present your revised work to the panel again.

5. Awarded an MPhil Degree

If the academic panel decide that major corrections or additional research still won’t allow your work to meet the PhD standard, you may be awarded a lower-standard MPhil degree instead. For example, philosophy PhD candidates will be awarded a Master of Psychology degree instead of a Doctor of Philosophy degree. Typically, MPhil degrees are awarded in place of PhDs if your work lacks originality or the knowledge creation that a PhD requires. An MPhil degree ranks above MA and MSc degrees as the most advanced Masters degrees. An MPhil degree still demonstrates that you have the same skill set as someone who successfully obtained a PhD, and they are still valuable to employers.

6. Immediate Fail

An immediate fail is rare; a 2022 survey found that only 3.3% of PhD candidates fail their viva outright – it certainly isn’t something you should obsess over. If when you are preparing for your viva, you find some faults in your thesis, don’t be afraid to broach them yourself in your exam; this will show that you can present a passable thesis. `

PhD Viva Tips:

Don’t work with irrelevant guidance or tips.

While brushing up on generalised tips online can help you to feel prepared for your viva, remember that there will always be variability in the process, the focus of the exam, and the questions asked. The variable factors include your field of study and the university you are obtaining your doctorate. With this in mind, always chat with your supervisor to ensure you are preparing with the right and relevant knowledge.

Treat the Examiners as Equals

Your PhD defence may technically be an exam, and naturally, many PhD candidates are stressed, daunted, or overwhelmed by the process for weeks. However, you will do much better if you go into the exam with the mindset that you are equal with the academic panel and treat the examination as a discussion rather than an inquisition. Remember, your viva is your chance to be seen as a doctor, not a student.

Mindset Matters

After spending years on your thesis, you will know your subject inside and out; it is your area of expertise; don’t go into the viva with a defensive and confrontational mindset; remain confident in your knowledge creation and how it benefits your field of study. Imposter syndrome can come in hard here, so limit your negative self-talk and silence your inner critic.

Ask for a Mock Viva with Your Supervisor

Never be shy about asking your PhD supervisor for the support you need as you prepare for your viva. They will be best placed to answer all of your questions as they will know the procedure for your university and your field of research. Your PhD supervisor will likely have already been present in viva exams; they will know the score, and more importantly, after working with you for years, they will want you to pass your viva – never be shy about asking them to arrange a mock viva to help you prepare.

How long is a PhD?

If you look for an answer to the question, how long is a PhD thesis, you will notice that there is a lot of contradictory information on the internet because there is no one-size-fits-all answer for PhD students. How long does a PhD take ? Well, we’ve got all the info you need in our other blog

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From admission to dissertation. Tips on making the PhD journey happy, productive and successful

Viva Presentation tips

18 tips to pass your Viva presentation

Viva Presentation of your PhD thesis requires you to prepare thoroughly. Viva Voce defense could be a failure if you don’t present properly. Learn tips on how to do PhD viva dissertation defense that makes you pass in doctoral viva. Face Viva exam confidently with an impressive opening speech. Keep some sample PhD viva questions and answers readily.

  • Adjust voice as per the room size during the presentation of PhD viva.
  • Clear Audibility is the first step for viva Voce success.
  • Present Confidently viva thesis presentation.
  • Do not stammer while defending PhD viva voce.
  • Learn how to make an appropriate eye contact during PhD viva presentation.
  • Keep ready some ready-made sample PhD viva answers.
  • Know how to extend PhD viva validity.
  • Never say you don’t know about any question
  • Try to give your best from nothing during doctoral viva presentation.

Here are my detailed advanced tips on how to pass viva voce during your PhD studies. These viva tips will help you remain confident throughout your presentation

What is a Viva Voce?

A PhD scholar does not consider completing the thesis paper an accomplishment because they are still required to go through the viva voce process.

Although there are countries such as Australia that do not require one to do so, others like the United States necessitate the scholar to go through the process.

A viva voce is an oral examination whereby the researcher is required to stand before a panel of examiners to defend their dissertation .

This is why it is essential for the scholar to ensure that they have clearly mastered the field and the chosen topic by conducting the research on their own.

During the viva voce, the evaluators are at liberty to ask whatever question they feel is related to the topic and the candidate has the obligation of answering the question satisfactorily.

Simply put, a viva voce is an oral presentation that is aimed at proving that the researcher commands knowledge on the topic and has gained knowledge on the field of study.

When is PhD Viva voce examination conducted during PhD

A PhD viva voce examination is the last thing that comes in the PhD process whereby the researcher is required to present themselves before evaluators and answer any questions thrown at them regarding the thesis.

That said, the viva voce comes after the candidate has submitted their thesis to the faculty. Upon receiving the research paper, the evaluators may require the scholar to present themselves in person and required to exhibit what they have learned during the Ph.D. process.

Therefore, a viva voce comes after submission of the thesis and before the candidate earns the doctorate title.

How long is the PhD Viva Voce Presentation with example

Many Ph.D. candidates are concerned by the duration that a viva voce takes and we would like to point out that it all depends on how prepared one is for the same.

Traditionally, a viva voce is supposed to take ninety minutes with no hassles. However, it boils down to the examiners’ decision and if they feel that the time is not enough, then they can extend the process up to three hours.

The purpose of the process is to evaluate how much knowledge one has acquired during the Ph.D. and whether they are capable of answering questions related to their topic.

Therefore, it is true to state that the length of the viva voce will depend on the examiners. If the candidate does not satisfy their expectations, they are bound to ask more questions thus the process I likely to take more time

How many examiners will site in PhD Viva Examination

Many scholars are concerned about with the viva voce since it makes almost all candidates nervous as is the case of any situation where one has to stand before viva examiners and defend their work.

When one is deemed qualified to do a Ph.D., they are assigned a supervisor who ensures that the Ph.D. process is not marred by challenges through offering advice to the scholar.

The examiners are mostly two all of which should come from the university’s faculty. To ensure that the evaluation process is effective, they are mostly chosen from the same field as the candidate. Although it is not a must, there are occasions where the examining body may also comprise of external members.

This implies that the minimum number of examiners is two but they can be more according to the university’s decision.

Viva Preparation Questions

  • What is the new thing that one feels to read your PhD dissertation?
  • How do you prove this experiment can change the way others think?
  • Explain the validity of your proposition with some examples.
  • Give one strong why should we accept your thesis to be authoritative.
  • What influenced you to make your thesis stand out from others

Why is PhD Viva Presentation conducted

A thesis is nothing short of a research paper which means that the scholar is expected to have taken their time to conduct thorough research using advanced techniques.

The main reason why a viva voce is conducted is to give the researcher an opportunity to defend their work before they are graded whether they meet qualifications or not.

The first thing that the scholar should know is that they should be able to defend their thesis which means that they should be aware of everything that is in the research paper. The reason for this is because one can never know what the examiners will ask and from which section of the thesis they will derive their questions.

It is essential that the scholar must ensure that they are prepared adequately by going through their thesis and ensure that they are able to answer any question arising from the same.

There are candidates who may be tempted to have other people write their thesis and although it may be perfect, the viva voce reveals the truth depending on whether they can defend the thesis or not.

Be what you are in your PhD Viva Exam

According to many candidates, the viva voce is an impeachment whereby they feel like they are grilled, but in a real sense, it is designed to prove to themselves and others whether they are in a situation to defend their title as a doctor of philosophy in their field.

It is therefore important for the candidate to ensure that they do not fall prey to brown nosing. They should not direct their efforts to sweet-talk the examiners by trying to impress them. Instead, the scholar is advised to play their role and prove to the evaluators that they are capable of defending what they have written in the thesis.

It is recommended that the scholar should be calm, relaxed and confident in their thesis and have the courage to stand before the examiners and express themselves.

The candidate should recognize the importance of the thesis and this is partly the reason why they have the responsibility of choosing their own topic and doing the research.

Never give one-word answers during Viva Voce viva exam

A viva voce must not be confused with a multiple choice questionnaire thus the researcher must appreciate that it is intended to diminish curiosity.

This cannot be achieved by giving one-word answers because the scholar is required to explain themselves as reflected in the thesis. Important to note is that a person’s standing or view on a certain view cannot be explained in a short statement.

The reason for this is because when one is asked a question during the viva voce, they are expected to state their position on the matter. The statement is not enough because it only triggers more questions.

Therefore, it is necessary that the scholar must support their claim by giving explanations as to why they support their arguments. In fact, the primary purpose of the viva voce is to ensure that the scholar can defend what they advocate for thus they should be in a position to give explanations and proof of what they are saying.

Be confident throughout the session (not over confident) during doctoral viva

According to human nature, there are people that find it easy to stand before others and air their view but the viva voce does not recognize that. It is essential that the scholar must be in a position to present themselves and stand for what they have presented to the faculty and the world.

At this level of learning, it is expected that the scholar must be confident enough to ensure that they can speak in front of a crowd leave alone two or three examiners. Confidence is a virtue that must be acquired by all scholars to ensure that they can stand before others and teach them or address key concerns that affect society.

However, the candidate must take caution not to be overconfident and the main reason for this is that too much confidence is interpreted as arrogance.

The bad thing about this is that the examiners are likely to get the wrong impression about the scholar. This is true because among the virtues that a Ph.D. teaches the candidate is patience and respect for others.

Do not show that you are afraid of Viva Voce of dissertation

The human mind is designed in such a manner that it controls the entire body and command activities that the individual will like and those that they will not.

One of the reasons why most scholars fail the viva voce process is that they tend to develop a negative attitude towards the same even before they go through the process.

It is essential that the scholar must be confident and not only outwardly but also inwardly. We recommend the scholar to ensure that they take all necessary measures to ensure that they do not exhibit fear in front of the examiners.

It is understandable that anyone is capable of nervousness while in front of a panel of examiners. However, we recommend that the scholar must pay attention to two things to boost their confidence. The first element is that they should prepare adequately for the process.

The second is that they should develop a positive attitude towards the viva voce. Adhering to these two advises is bound to increase the scholar’s confidence in themselves and their thesis.

My top Viva advice is to practice before one month

In the scholar’s life, before they take the Ph.D. course, it is true to say that they have gone through many examinations and passed. It is not automatic to pass an examination and it requires a lot of dedication and sacrifice.

Although there are individuals that may be tempted to take a shortcut, there is only one recipe to passing. All examinations require a lot of preparation and a viva voce is not exceptional.

This implies that the scholar must take their time to prepare for the viva voce beforehand. It is recommended that the candidate should take at least one month to prepare themselves.

It may seem like a difficult thing to do but we remind the scholar that they have a supervisor who has knowledge about the viva voce and they can offer useful advice that can make the process easy for the candidate.

Dress proper and be neat and formal during thesis viva preparation

The short description of a viva voce is that it is an oral presentation and therefore it means that there must be physical appearance.

Appearance has a powerful effect in that it creates a lasting impression on the examiners and therefore, the way that one presents themselves before the evaluators automatically make them judge the candidate’s character. The scholar wants the evaluators to be on their side and therefore the first thing that should pop in the scholar’s mind is creating a good impression.

It is essential because it may affect the examiners’ judgment which implies that a good impression is likely to yield good results while a bad impression is likely to yield bad results.

It is crucial that the scholar must dress formally for the viva voce and they should be neat. The proper dressing makes the scholar look responsible and in a position to defend their thesis.

Read your thesis once and thrice and prepare sample PhD viva answers

The viva voce is an oral presentation of the thesis and therefore it is necessary that the scholar must ensure that they have a proper understanding of their thesis before they engage with the examiners.

It is purposeful for the scholar to have 100% knowledge of the thesis even though it is common to forget some points. To avoid mistakes arising from being unable to answer some examiners’ questions, we recommend the scholar to make a point of revising the thesis before and after submitting to the faculty.

Some scholars might consider reading the thesis twice sufficient but this is not the case.

Others may be overconfident and feel that they do not have to read the thesis again but this is usually a recipe to disaster. It is our recommendation that the scholar reads through the thesis at least three times to ensure that they are familiar with all the points discussed within.

Learn how to start your opening speech of PhD Viva

It may sound tricky to summarize a paper comprising of at least 50,000 words in as little as five minutes but it is possible and the scholar should practice doing so.

Essentially, the examiners expect the scholar to have mastered their thesis and therefore they should be able to point out the problem surrounding the topic as well as the causes and recommended solution briefly.

At the onset of the viva voce, the scholar must be in a position to introduce the dissertation to the examiners briefly. This involves presenting an overview of the research paper.

Among the different sections of the thesis is the abstract section which was explained as a summary of the research paper. While preparing for the viva voce, the candidate is advised to consider the abstract and use it as a guideline for the oral presentation.

Listen to what your examiner is asking clearly

The easiest way to fail in any examination is answering the wrong questions or failing to address what the examiner requires.

It is mandatory for the candidate to pay attention to what the examiner is asking and carefully analyze points that they require from the candidate.

By doing so, the scholar is in a position to give the right feedback with reference to the thesis. It means that it is important for the candidate to concentrate during the viva voce and they should ensure that they are not distracted by anything else. 100% concentration is a requirement for the viva voce process if the candidate is going to answer questions satisfactorily.

Do not argue under any circumstance (just defend)

It should be noted that a viva voce is not a form of a debate where two parties are engaged in arguing. The candidate should note that the examiners are already professors and they are not there to engage in a battle of wits.

What they require from the candidate is proof that they have learned during the research and that they are in a position to demonstrate that they command knowledge in their specific fields.

That said, rather than argue, the candidate must ensure that the presentation is based on defending the thesis and shows the validity of the scholar’s standing regarding the points presented in the dissertation.

Pass- short corrections-resubmit- Fail after Ph.D. Viva defense

After the oral presentation, the examiners make a point of presenting their results to the candidate which point out areas that were sufficiently answered and those that were not.

The candidate should look into areas where they gave wrong answers and make a point of researching and making the necessary changes.

The correct answers should be passed to the examiners. The candidate must ensure that the correct answers are written as briefly as possible.

Do not write stuff on your hands or hold slip while defending viva thesis

During the oral presentation, it is necessary that the scholar avoids writing points in their hands or slip. It is so because it acts as a way of showing that the scholar has not prepared sufficiently for the viva voce.

In addition, it creates the impression that the researcher is not fully aware of the content in the thesis. Using written points give the impression of someone who is presenting a speech that has been written for them.

The candidate does not want the examiners feeling that they have not done the research for themselves as this would automatically lead to a fail.

How to do viva presentation with an impressive eye contact

A good presentation is one that the candidate commands presence before the examiners as it shows that they are confident with their work. It also shows that the scholar has worked hard for the thesis and they have nothing to fear regarding the viva voce.

One way of showing the examiners that the candidate is prepared and has dedicated themselves to the research is by making constant eye contact with the examiners.

The researcher should also be careful not to give too much attention to one examiner and instead they should keep eye contact with all the researchers during the whole viva voce.

Plan some expected questions and your answers

Whichever situation that one finds that they are required to make a presentation before a panel or a group of people, the first thing that the person does is to prepare adequately.

It is useful for the candidate to expect some questions that are likely to be asked during the presentation and therefore the scholar should make a list of some of them and work on possible answers.

Although one cannot fully predict the type of questions, it is important for the candidate to conduct a research of previous viva voce that have been done on the same field. Also, the scholar must consult the supervisor who may have useful advice.

Be ready to explain the drawbacks of your thesis cleverly

There is no perfect research and all of them are liable to limitations which the candidate must make a point of acknowledging before they are asked.

The scholar must be prepared to mention the drawbacks and explain why they arise. Merely stating the drawbacks is not enough since it will only make the examiners curios and therefore the candidate must defend the thesis wit-fully taking care to show that the limitations could not be avoided.

Challenges encountered during the thesis should be noted since they might be helpful in explaining the limitations or drawbacks.

Make rehearsals before two days of your viva voce

It has been noted that the scholar must ensure that they are fully prepared for the viva voce before meeting the examiners. Apart from reading through the thesis at least three times, the candidate should ensure that they prepare for the presentation prior to the scheduled day of the meeting.

If possible, the candidate is advised to look for friends and prepare a mock viva voce whereby they act as the examiners and ask questions that the candidate feel could potentially be asked.

This process should be done at least two days before the presentation. A rehearsal is important because it assists the candidate to engage how much they know pertaining to their thesis and some areas that may not have been given adequate attention can be addressed.

Never say “I don’t know” Somehow defend PhD viva (Be it wrong its ok)

A research paper consists of a lot of content and it may not be possible to remember everything that is contained in the same. It is common for the examiners to ask questions that the candidate has not prepared themselves to answer but this should not deter them from answering.

In case the candidate encounters such questions, they should not hastily state that they do not have the answer. Instead, the candidate should take their time and reflect on the thesis and analyze the connection between the question and the thesis.

It is understandable if the answer is not correct but at least the candidate should try to answer the question.

Prepare some positive statements of English to use them during presentation of your viva

One way of preparing for the viva voce is to ensure that one has answers to the examiner’s questions. The main areas of concern are the main points and how they are relevant to the topic.

A presentation must have statements that can be defended at all times since they help the scholar to show the importance of the thesis to the community. Such statements must be positive in nature and exhibit backing up of the thesis.

They should be prepared in English since it is the universal language that is applicable to almost all job specifications in the job market.

How to present PhD viva presentation positively

Positive statements are one way of the researcher showing that they have confidence in themselves and the thesis. Throughout the viva voce, the candidate must ensure that they have a positive attitude which is essential because it draws the examiners on their side.

A positive attitude makes it possible to answer questions easily and there is a likelihood that the examiners may not ask questions that put the candidate in bad situations. It enables the scholar to be motivated and therefore they are able to answer questions freely without feeling tense.

Be audible and do not look shy during thesis viva presentation

It is understandable that some people may have difficulty in standing before people and speaking their minds. However, the scholar is advised to remember that this is their dissertation and the presentation is among the stakeholders that determine whether one will pass or fail.

To counter shyness, the candidate is advised to prepare themselves adequately before the viva voce process. It is important because it boosts the candidate’s moral and level of motivation.

A scholar that is prepared becomes confident in themselves and they also develop a positive attitude which makes it easier to face the examiners and answer any question hurled at them without fear.

If you have had any experience with public speaking skills, you can do this task very easily. But unfortunately, you might have been lazy not to learn these skills when your English Teacher taught you during your school days. You need to give your count now while doing your Ph.D. viva. These skills are very necessary to get through these oral sessions. The way you speak is what matters seriously for the examiners or the reviewers.

Once you are through enough to make it, you can become successful. This way you can become a lot more confident and you will pass this viva without any doubt. While presenting do remember that you have to make some preparation for the last two months. This preparation is the only backbone for your viva. If you do not prepare beforehand you will face trouble while presenting your Ph.D. viva oral

When you keep this in mind, there are some other tips, I want to give here. See how PhD candidates do their viva online. If you go on to youtube you will get many videos in real time. Learn from them how they are able to present during such stressful sessions. I suggest you watch at least one video about Ph.D. viva or any other sessions with respect to Viva. This will surely give you fuller knowledge and viva presentations presentation tips about viva

When you want to give Ph.D. viva, try to show respect who are around you. They may be irritating sometimes to face. But you must never lose temper if someone asks you an inappropriate question. These type of unrelated questions are very common while giving your Ph.D. viva oral examination.

Master all the techniques on how to face audience and PhD supervisor during your viva voce. The way you speak, the way you behave, the way you respond, the way you manage, the way you present. All such skills must be learned before going to viva session.

You cannot make yourself a bluff in front of others for simple questions. So in order to avoid this, you must take your viva seriously and make sufficient preparation.

Never lose heart rather increase your active participation in the viva. If someone corrects you, accept it humbly and proceed to the next defending minutes. So Ph.D. viva is not a big problem if you follow all these suggestions throughout the reading on how to do Ph.D. Viva Voce.phd viva tips

Syam Prasad Reddy T

Hello, My name is Syam, Asst. Professor of English and Mentor for Ph.D. students worldwide. I have worked years to give you these amazing tips to complete your Ph.D. successfully. Having put a lot of efforts means to make your Ph.D. journey easier. Thank you for visiting my Ph.D. blog.

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How to prepare for a phd viva.

Preparing for your PhD viva can be a daunting task. You'll want to ensure that you are ready to defend your thesis successfully.

To help, we've rounded up some useful tips on what to expect during your viva experience, how you can fully prepare for the process and what to expect after viva is done.

What is a PhD viva?

PhD Viva Interview

For the majority of PhD students, finishing the dissertation is a seminal moment. After all, knowing that such a long project has come to an end may seem almost surreal.

However, a hard copy of the dissertation is not the end of the PhD experience , each dissertation will have to be orally ‘defended’ in an examination called a viva, which usually takes between one and two hours to complete.

A PhD is an oral examination in the form of a discussion in which PhD students present their PhD thesis and defend their research methods and outcomes to a panel of academic experts.

The word ’viva’ is a shortened form of the Latin term ‘viva voce’ which means ‘live voice’.

How to prepare for a PhD viva

A key way to ensure success in your PhD viva is to make sure you are properly prepared – this can be done in four simple ways:

1. Know your research project inside out.

2. Find out about your viva examiners if you can. If you know about their areas of expertise, you may be able to anticipate their lines of questioning and even work out what they’d like to hear more about.

3. Compile a list of possible questions and practice your explanation/defence of methods used and outcomes discovered.

4. Prepare properly for the actual day by planning your journey to the PhD viva, knowing what you’re going to wear and compiling all the documentation that you need to have with you.

How to prepare ahead of your PhD viva – 5 steps to success

After you hand in your thesis/dissertation, you will usually have a few free weeks before undertaking the PhD viva. It is important that you prepare well during this period and walk out of your examination with at least a “pass mark subject to minor corrections”.

We have compiled a list of some of the most important PhD viva preparation steps to help you succeed in your viva.

STEP 1 – Take a break

After you have submitted your thesis, it is good to take a one or two week break and avoid thinking about your work. This will allow you to see your thesis from a third-person perspective and to understand your own shortcomings more clearly when you read it once again.

STEP 2 ­– Get to know your thesis

Read each section carefully and summarise its main points. You need to know how to explain and justify the main aspects of your thesis including the research question, methodology and data analysis. Writing any thoughts that come to your mind while reading the thesis as comments will help you to establish a "personal connection" with the thesis and understand it in greater depth.

STEP 3 – Critically examine your thesis

The crucial step of preparation is to lose any "compassion" towards your own work and criticise any weak points that you find in your thesis. It is very likely that your examiners will focus on some of these points in your viva, and you need to find out how to justify them.

STEP 4 – Learn how to defend your thesis!

Write a list of possible critical questions regarding your research and learn how to answer them convincingly. Try to think of yourself as a lawyer and of your thesis as the defendant whom you need to defend!

STEP 5 – Arrange a mock viva with your supervisor around 1-2 weeks before the actual viva

This will help you determine whether your preparation has been complete or there are still some aspects to be prepared before you can successfully defend your thesis. And don't forget to do something enjoyable and relax on the day before your actual viva!

PhD viva tips

We have compiled some of the most useful PhD viva tips to help you understand what is awaiting you if you ever decide to become a PhD student or if you already are one.

long is a viva?

There is no formal time limit. A viva can last between 1 and 2 hours but can sometimes event take 3 hours.

will examine me?

You will usually be examined by 2 examiners. One of them will be a member of your own university (internal examiner) and the other will be an external examiner from another university. Your supervisor may also be present during the examination but is not allowed to ask any questions or impact the outcome.

is the purpose of a viva?

A viva is an academic discussion between you and 2 senior researchers in your field of study. It is your opportunity to show them that you possess a thorough understanding of your topic and that you can defend your own research ideas. It is a challenging experience that many students enjoy and are inspired by as it is refreshing to talk to someone about your academic knowledge instead of just spending hours at your desk writing on your own.

will I know the outcome?

After the viva has ended, your examiners will ask you to leave the room so they can make the decision. Sometimes it can take them just 10 minutes to reach the decision, however it may take them up to an hour or even longer. Please note, the amount of the time they take to reach a decision doesn’t reflect on the quality of your viva performance.

are the possible outcomes of a viva?

– this result is very rare and usually only happens if you have plagiarised your thesis.

– if the examiners feel that the amount of work you’ve done is not sufficient for a doctoral degree they may award you an MPhil.

– if the examiners think your thesis is not sufficient for an MPhil, they may allow you to do more work and resubmit for an MPhil.

– if the examiners think your thesis is of a high standard but the amount of work is insufficient for a doctoral degree, they’ll give you the opportunity to do further research
and resubmit.

– this is the most frequent decision and usually requires you to do some minor revisions before being awarded your doctorate.

– to get a PhD without having to do any corrections is rare but not impossible. Hard work really does pay off!

Who will be at a PhD viva?

A viva is attended by the PhD student and at least two academic experts.

In some universities, in addition to the student and the two examiners, there may be a senior member of academic staff present to act as chair of the examination. Your supervisor may also be present, although some universities do not allow this.

If there is a chair or your supervisor present at your PhD viva, they are not allowed to ask you questions or to take part in any of the discussion about the outcome.

PhD Viva Interview

What questions are asked at a PhD viva?

The examiners will usually start by trying to make you feel comfortable, perhaps by welcoming you and having some polite ‘social’ conversation to start with, for they will understand that you are nervous.

They will soon move on to the range of questions they have planned. These questions could cover anything about the thesis. They might ask you about the methods you have used, the results and findings or the conclusions you have drawn.

They may ask very detailed questions, or they may ask about the overall methods or findings. They will certainly want to explore any areas they feel you have not explained clearly enough or in enough detail in your thesis.

You may be asked to justify some of the conclusions you have made and to show exactly how your data has led you to draw those conclusions. In the area of methodology, you may be asked to justify your choice of the overall method you used, as well as explaining the decisions you made about the detailed methods you chose.

You may also be asked to show how well you know the range of literature and previous research in your field and how your findings add to the literature. In most vivas you will be asked to explain carefully what you believe to be your distinctive ‘contribution to knowledge’ from your research.

What will the PhD examiners want to know?

Understanding what PhD examiners might ask during your viva and having your answers is one way to prepare for success.

How do you justify the critical aspects of your work?

No dissertation is perfect and there will be some aspects of your PhD research that your examiners will be specifically critical about. Thus, it will be important for them to ask you some of the questions regarding these 'critical' aspects of your work to see if you can justify them. These questions will probably be decisive in determining the outcome of your viva.

Can you elaborate on specific sections of your research?

Besides focusing on some 'critical' aspects of your work, the examiners may ask you to give some more elaborate explanations of specific sections of your thesis or specific techniques used in your research. This will help them determine whether you really understand your own work and can think critically about your research.

How does your research contribute to your field of study?

Last, but not least, your examiners will be interested in how well you understand the place of your work within your field of research , and they will ask you to explain the overall contribution of your research to your discipline. As an aspiring student, you will always need to see the big picture and understand how your ideas can shape your academic field.

PhD viva – an academic discussion

A helpful way to think of the viva is as a serious academic discussion. It is an opportunity to sit and talk about your work and your field with two senior academics who know the field well.

As such, it should be challenging and stimulating, and should give you a chance to show that you can engage in serious academic discussion and debate at a very high level.

After the examination many students look back on their viva and see it as a stimulating and enjoyable experience, and they forget the nerves they felt when they first entered the viva room.

The dos and don’ts of a PhD viva

After you have carefully prepared how to defend the content of your thesis, it is important to think of how you should behave during the actual viva.

We have a whole host of PhD viva tips for you. From how to answer properly and be convincing to what to say and what not to say – here, we have clarified these things in our list of PhD viva  dos and don’ts . 

Speak clearly and slowly to make sure
the examiners can follow what you’re saying, especially when answering more complex questions.

Don’t talk incoherently and formulate answers without giving them any structure.

Make eye contact and try not to be too
stiff – try and show that you’re enjoying
the discussion.

Don’t behave arrogantly and act like you know more than the examiners – remember, they are the experts!

Remain quiet after you have answered a question to give the examiners some time to consider your answer.

Don’t start answering before your examiners have finished their question.

If you don’t understand a question, ask
for it to be repeated or clarified to
avoid answering something you
haven’t been asked.

Don’t try and use jargon, especially to bluff your way out of a question you don’t know the answer to.

Take your time before speaking so you can structure your answers clearly

Don’t digress in your answers or talk about something you haven’t been asked about.

Answer with confidence to demonstrate faith in your research – even if you do
have some doubts!

Don’t blame your supervisor for any weaknesses the examiners notice in

your research.

Avoid simple yes or no answers.

Don’t take your examiners’ criticism too personally or get angry.

Dress smartly.

Try not to look at your watch.

Are you a Doctor after your viva?

Once you have passed your PhD viva, you cannot officially use the title ‘Dr’ until you receive official documentation from your university stating that you are a ‘Doctor’.

Can you fail a PhD viva?

Although the majority of PhD students are happy with the outcome of their PhD viva, things don’t always go as expected, and some of the least appealing outcomes do happen. You can fail a PhD viva – although according to recent research by Discover PhDs this number is only 4%. It is more common for borderline students to be awarded a provisional pass pending amends to their research project.

If, as a PhD student, you feel that your own work is not of very high quality and you are aware that the unfavourable outcome is your fault, there is not much you can do except for complying with the decision of your examiners.

Appealing a PhD viva decision

If you feel that your viva has not been appropriately conducted and the outcome doesn’t match the quality of your performance, there are some things you can do.

Universities in the UK will usually allow you to appeal against how your examination was conducted and if you do appeal, a panel of researchers within your university will be appointed to investigate the issue, but you must possess clear evidence in your support.

If your appeal is successful, you will get a chance to undertake another viva with different examiners.

If the university hasn’t decided in your favour, you will be able to appeal to an external organisation, such as the Office of the Independent Adjudicator for Higher Education (OIA). But remember, appeals are usually not very successful, and it is always better to make sure that your thesis is of high quality and that you have done the right amount of PhD viva preparation.

Related articles

What Is A PhD?

How Long Is A PhD?

PhD In The USA

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Preparing for a PhD Viva

“The PhD viva is a verbal or mock evaluation process to award a PhD degree.” 

Preparing for a PhD viva is a crucial stage for your entire PhD tenure after all it decides your fate. Yes, it is as important as your PhD thesis or dissertation. So need to be prepared well before the viva. 

But don’t panic! It’s not the end of life if you fail. It’s just a viva voce session much like you have faced in graduations or masters. In fact, it’s easier than that! I will explain to you how. 

Here in the present article, I will share with you some of the tips you should care about when preparing for the viva. I will also share with you my knowledge and experience focusing on how you can achieve a successful viva voce session. 

First, we have to understand the structure of PhD viva and why it is important. 

Related articles:

  • What is a PhD?
  • PhD memes of 2020.

What is a PhD viva?

The viva voce gathering is conducted to fulfill the requirement of the award of PhD. We can consider it as a final stage or kind of examination of a PhD student . 

So obviously you have to prepare well. 

The viva is of two different kinds in context to PhD, open viva session and close viva session. 

In the open viva session, anyone can participate in your viva presentation, it’s much like a lecture. Also, everyone can take part in the discussions too. In universities of the USA and Canada, open viva for PhD is usually, conducted. 

While in the close viva session, only two external referees, supervisors and one nominee from university can take part (in close doors). In the UK and related territories, the close viva is mandatory. 

However, in India and Pakistan, universities are independently takes decision to conduct viva. 

So the immediate question strikes in mind that which viva system is the best! Frankly speaking, we can’t compare. Both have their importance and drawbacks. 

For instance, in an open session, some people can harass you and make it difficult for you to focus. While in close viva session, a decision is entirely on the external evaluator, because no other subject experts are there. So it might difficult for you to convince a single person. So let’s put that aside and focus on the viva preparation. 

how long are phd vivas

Preparations for PhD Viva:

First, thing! Keep in mind that the process of PhD viva is somehow similar to the other master’s or bachelor’s examination, but not the content. You do not have to remember protocols, theories and definitions unlike other viva’s.

Your PhD viva is focused only on your PhD topics and your thesis. Questions and discussions are conducted based on your PhD topic or thesis. So here is the catch!

If you have performed you PhD sincerely, the viva session is easy for you, trust me. 

But for someone, who even doesn’t know what’s there in his or her thesis, make sure, it will be a difficult time for them to even complete the viva. If you are from case one, be relaxed. And just go through the article. 

But if you are from the second case, you should have to prepare a bit well, if you really wish to complete a PhD in the first attempt. 

So here are some of the key points to prepare for PhD viva session 

Viva presentation: 

A short and good PowerPoint present is must require in a viva. The presentation should be a point to point writing to just use as a reference to discuss things. Do not fill it with texts, images and thesis data. 

Make a two presentation replicas, one in-depth ppt of approximately 40 to 50 slides and another with just 20 slides. Why we have to do this! We don’t know the pattern of the examiner. Some prefer short presentations while some prefer longer in-depth. 

So to be on a safe side prepare two presentations. 

Divide you presentation is sections: Two slides for introduction, two to four slides for literature, four slides for material and methods, 6 to 10 slides for results, one for interpretation and two for your introduction and ending note. 

Try to make short sentences and eye-catchy images in your presentation. The slide should of a kind of reference for an examiner. We are not giving a presentation, we are discussing a PhD thesis, so the more weightage should be on talking and discussion rather than reading slides. 

Keep your presentation simple and understandable that cover all the chapters on your thesis. 

Also, The presentation should be professional looking, do not fill it with unnecessary images and smilies and avoid the thank you notes on last. Instead, you can end your presentation with one mesmerizing quote. 

Read more: Life after PhD .

Spoiler: You will be asked which you will show. 

Lastly, check you presentation with your supervisor and colleague to avoid mistakes. 

Your appearance: 

You are neither going for job interview nor for college viva so no need to make our appearance so perfect or too causal. Make a comfortable look, wear light-colored clothes and try to look positive, not smart. 

Keep with you…

Keep with you, your PhD thesis, some notes, a Pendrive with thesis and presentation in different formats and a CD for back up. 

Avoid things…

You are not going to examination, do not take pen, pencil and other examination things with you. Also no need to carry all the documents regarding PhD. Your supervisor will be there to show your true identity. 

Just go casually like you are going to give a lecture. 

During the presentation…

We are still not mature enough to handle things because we don’t have that much experience. So try hard to make a viva session positive enough for you, you should have to take care about several points. 

First, it’s a discussion session, don’t argue to correct your point. 

Respect the examiner’s opinion even if you know he or she is wrong, it is not possible, though. Because they have vast knowledge in your field. 

If you think the examiners are not getting your point correctly, politely try to correct them. 

If you think the question is not answerable for you, openly accept it that I don’t know about it, don’t try to trick them, again I am telling you “they re experts”.

If you know the answer but you need some data or information to see, don’t hesitate, check your thesis or notes to answer the question, again remember, it’s not an examination. All you have to do is! Defending your thesis. 

Your thesis should have some strengths and weaknesses, its a common thing. Accept openly your weaknesses and loop-holes of your research work. 

Do not offend with examiners comment or criticism, be relaxed, positive and polite, even though they are not! Ultimately it will help you in the end. 

If you feel that the question or discussion is going away from your research topic or thesis, immediately interrupt them and request to get back on point. 

Do not answer if you don’t know, take time and think before answering. 

Remember, if discussions got complex and heated, your research is something much noticeable. 

End the viva: 

End the presentation with a quote and end the session with a small smile on your face. Confess what you like during viva and don’t forget to thank everyone who participated in the viva. 

Results of viva: 

The viva result is “yer” or “no” in a different way. If an examiner will satisfy with your work he will appreciate it and give some small indication to look after in future. 

Even if they want some small modifications in your thesis, It is considered as ‘yes’ also. Usually, the thesis never got rejected in viva until it is totally out of focus from the main objective.

If examiners are not satisfied with your work, they can suggest some correction which in most cases, not appointed for re-viva. 

Relared article:

How long does it take to get a PhD?

Conclusion:

Besides, your research matter and subject knowledge, how you present yourself, how you behave during viva and what you present make a difference. If your research topic is solving some real-world problems, it is worth appreciated. 

Dr Tushar Chauhan

Dr. Tushar Chauhan is a Scientist, Blogger and Scientific-writer. He has completed PhD in Genetics. Dr. Chauhan is a PhD coach and tutor.

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How to survive a PhD viva: 17 top tips

Just handed in your PhD thesis? Now it’s time to plan for the next hurdle: a viva. Academics offer their advice on how to best prepare

  • Finishing your PhD thesis: tips from those in the know
  • The key to a successful PhD thesis? Write in your own voice
  • PhD: so what does it really stand for?

H anding in your PhD thesis is a massive achievement – but it’s not the end of the journey for doctoral students. Once you’ve submitted, you’ll need to prepare for the next intellectually-gruelling hurdle: a viva.

This oral examination is a chance for students to discuss their work with experts. Its formal purpose is to ensure that there’s no plagiarism involved, and that the student understands and can explain their thesis. It involves lots of penetrating questions, conceptually complex debates and is infamously terrifying.

How can PhD students best prepare? We asked a number of academics and recent survivors for their tips.

Preparing for the viva

1) Check your institution’s policies and practices

Institutional policies and practices vary. Find out who will attend your viva (eg will a supervisor attend, will there be an independent chair?) and what their roles are. Penny Tinkler and Carolyn Jackson, authors of The Doctoral Examination process: A Handbook for Students, Examiners and Supervisors

2) Re-read your thesis – and keep up-to-date with research

Don’t underestimate the amount of time the examiners will have spent reading and thinking about your thesis – however, you should remember that you are still likely to be the “expert in the room” on this particular topic. Check to see if any relevant recent papers have emerged since submitting the thesis and, if so, read these. Dianne Berry, dean of postgraduate research studies, University of Reading

3) As an examiner, you tend to stick to things you’re an expert in when driving the questioning

Your viva panel will consist of an external expertise in your subject area and an internal which may be in a subject field associated or directly related to yours. The external examiner is the one who mainly calls and fires all the shots and so it’s pretty important to have a knowledge of their published contributions, especially those that are related to your thesis in any way. Dr Bhavik Anil Patel, senior lecturer in physical and analytical chemistry

4) Think about what you will or won’t defend

Consider carefully what you will defend to the hilt in the viva, and what you are prepared to concede. It’s important to defend your claims about the originality of the thesis and its contribution to knowledge. However, no research is perfect, and showing that you have considered what could have been done differently, or even better, is not a bad thing. Penny Tinkler and Carolyn Jackson, authors of The Doctoral Examination process: A Handbook for Students, Examiners and Supervisors

5) Draw up lists of possible questions – especially ones you dread

I collected questions from a bunch of different places ( listed here ) which I then tailored to my PhD. Somebody I worked with also recommended that I put together my 10 nightmare questions. I found this really useful, by writing down and thinking about my dreaded questions, they were no longer so bad – it was almost as if I’d faced the beast.

Generally speaking, I was able to predict the questions that I was asked. There were a couple that were unexpected but they were either conceptual points or based on literature that I just didn’t know. Richard Budd, research assistant, University of Bristol who sat his viva in summer 2014 and has blogged about the experience

6) It’s not like sitting at a laptop where you can edit a sentence as you go along

By the time you finish your PhD you’ll know your thesis inside out. One of the things you won’t be as practised at is talking about it. When I was preparing for my viva, I practised vocalising answers. It’s not a case of needing to learn to answers verbatim – this would only work as a technique if you could guarantee the exact way your examiner will ask a question – but it is about thinking about how you will articulate certain things. A viva isn’t like sitting at a laptop where you can edit a sentence as you go along. Richard Budd, research assistant, University of Bristol who sat his viva in summer 2014 and has blogged about the experience

7) Bring a printed copy that is exactly the same as that of your examiners

Ensure you and your supervisor have a printed copy that is exactly the same as that of your examiners (specifically the same pagination). Mark with tabs the key sections and highlight for reference important quotes and points you might want to refer to. If you have some key diagrams it may help to have these printed larger on A4 sheets that can be used in a discussion.

There is a chance, albeit slim, that an examiner will wish to see some piece of experimental data, software, or other supporting evidence. Have this all neatly archived and accessible. You can do this after submission. Anthony Finkelstein, dean of the UCL faculty of engineering sciences who has blogged about surviving vivas

During the viva

8) Get off to a good start

Give a few detailed answers in the opening 15 minutes, demonstrating knowledge, describing your thinking and working - then the examiners are likely to relax into the viva. If the first few answers are short and non-specific, not demonstrating knowledge, this can begin to raise concerns, and that can set the tone for the whole viva. This is avoidable. Rowena Murray, author of How to Survive Your Viva: Defending a Thesis in an Oral Examination

9) Prepare for the icebreaker

Every viva opens with that dreaded icebreaker that is supposed to break you in gently but often seems to be the thing that gets students into a pickle. It’s so basic, students almost forget about it. Most often this would be to give a five to 10 minute introduction to your work and your key findings. This is such a common question that not preparing for it would be silly. Dr Bhavik Anil Patel, senior lecturer in physical and analytical chemistry

10) Silence doesn’t mean bad news

Don’t assume that you will be given any indication of the outcome at the start of the viva. The examiners may or may not offer comments on the thesis at this stage and candidates should not interpret a lack of comments at this point as a negative sign. In some cases institutional policy prohibits it. Penny Tinkler and Carolyn Jackson, authors of The Doctoral Examination process: A Handbook for Students, Examiners and Supervisors

11) Don’t point out your own weaknesses

Avoid shooting yourself in the foot by highlighting the weaknesses in the thesis by being overly humble (eg “I didn’t think this would be an acceptable piece of research given the way I handled x or y”) or by saying what you “failed to achieve” or “did not manage to carry out in a robust manner” etc. Leave that to the examiners to pick up in their reading, they don’t need help. Dr Mariana Bogdanova, lecturer in management, Queen’s University Belfast

12) Don’t talk like a politician There’s a danger of trying to over-prepare. Don’t learn answers off by heart – it removes the spontaneity and is obvious to examiners. If a student has pre-prepared answers they become a bit like politicians, answering questions they weren’t asked rather than the ones they were. I have come across mixed views on mock vivas. Some people really like them – and they can settle nerves – but other times it can remove spontaneity and steal your thunder. Jerry Wellington, head of research degrees at University of Sheffield and author of Succeeding with Your Doctorate

13) You may need to move from friendly questions to complex debates

Vivas can appear friendly and then suddenly go very conceptually complex. The language used is an alternation between accessible normal language and really specialised arguments. The student needs to be able to move orally between the two. Gina Wisker, professor of higher education and contemporary literature at Brighton University

14) If things get on top of you, use the excuse of having a look at the thesis

Make sure that before the viva you get plenty of sleep, eat properly and de-stress. If things get too much when you’re in there, use the excuse of having to look something up in your thesis. You could also pause and say “Can I write that down for a moment?” Stall for time until you get yourself back together again. Gina Wisker, professor of higher education and contemporary literature at Brighton University

15) Focus on your contribution

One of the most important things that the examiners will be looking for in your thesis, is the “contribution to knowledge”. It is the contribution which makes your work doctoral level. Be sure that you understand exactly what your contribution is, and that you are able to express and explain it clearly and concisely.

Write it down in a paragraph. Discuss it with you supervisor and fellow students. Make sure that you can relate your contribution to other work in your field and that you are able to explain how your work is different. Peter Smith, author of The PhD Viva

16) Expect your viva to last between one and three hours

Students frequently ask how long the viva is likely to be. Obviously they vary. Discipline differences are important. Our research suggests that most natural and applied sciences vivas were completed in one to three hours, whereas arts, humanities and social science vivas were typically less than two hours long. In the natural and applied sciences 43% of vivas lasted two hours or less, compared to 83% in arts, humanities and social sciences. Penny Tinkler and Carolyn Jackson, authors of The Doctoral Examination Process: A Handbook for S tudents, Examiners and Supervisors

17) Enjoy it

The best advice I ever got was “Try to enjoy it”. It seemed ludicrous at the time, but I actually found myself really getting into the discussion as the viva went on. It’s one of the earliest chances you get to talk to someone who not only informed your research (ideally) but is also conversant with your own. It’s a great chance to explore the contours of your research – treat it as such, and it doesn’t seem quite so daunting. Michael James Heron, school of computing science and digital media, Robert Gordon University

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Finishing Your Doctorate - a guide for students approaching the end of their studies

Learn about about the different stages you will go through to complete your doctorate. find out about the timescales and the issues you will need to consider..

  • Introduction

As you approach the end of your doctoral studies there are many things to consider including finishing off your research, writing and submitting your thesis, preparing for your viva voce examination and completing any corrections before your doctorate is awarded.

This step-by-step guide will help you understand the different stages you will need to go through. If you are completing an MPhil, please contact your supervisor or the Doctoral Programmes Administrator in the Doctoral College for specific advice for finishing your award as the process will be different. They are on hand to provide help and further detailed information about each step.

  • Timeline for completion of your doctorate

The timeline from when you formally tell us that you intend to submit your thesis or portfolio to when your award is approved, can vary from six to 18 months, depending on the outcome of your viva voce examination. You can see the timeline in full on this diagram .

You should aim to submit in advance of your expected registration end date, in order to allow time for the examination process to be completed before your registration period runs out.

Funding and visa issues

If you are in receipt of funding for a fixed period, you should bear this in mind when considering when to submit. Whilst technically it is still possible to submit your thesis on the last day of your formal registration period, or after your funding ends, you are strongly advised not to do this: you will need extensions to cover the examination period and you will still be required to pay fees until the date you submit your thesis. If you are a Tier 4 visa holder, you may also need to consider that your visa could expire before your viva examination can be held.

For those students who find themselves in financial difficulty, The University of Bath Hardship Fund is available.

  • Step 1: Decide how to submit your thesis

A doctoral thesis submitted for the award of MPhil, PhD, DBA, DPRP or DHealth may be submitted in one of two differing formats:

a traditional thesis consisting of chapters

an alternative format thesis which integrates academic papers into the text.

You will need to decide, if you haven’t already, which format you plan to submit. Ideally, you will have discussed with your supervisory team at an appropriately early stage in your studies how you wish to present your work.

The programme regulations for each Degree will describe how the research work may be presented: in a thesis, a portfolio (EngD, and DClinPsy only) or via a body of published works (MD MS only). Only students registered on an EdD prior to 2014 are able to present their work in either a thesis or portfolio format.

Further details of the University’s specifications for Higher Degree Theses and Portfolios can be found in Appendix 6 of QA7 . You may also want to read the Alternative Format Thesis FAQs .

You can access the Library’s collection of successful thesis submissions online via the Research Portal. You may wish to look at a few from your department as examples, taking note of content and organisation.

  • Step 2: Transfer to Writing Up Status

Once you have completed the minimum period of study required for your particular degree as stipulated in Regulation 16 , and you have finished the specified amount of work, you may be able to apply for transfer to 'Writing Up' status.

Each Faculty / School has its own requirements for what needs to be in place before you can transfer to writing up status. These are as follows:

Engineering - supervisor confirms that you have finished all experimental work and analysis and that you are now writing up the results

Science - laboratory work has been completed where appropriate, and the required data has been collected in preparation for writing up

Humanities & Social Sciences – a clear outline of the thesis structure, including methodological and analytical approaches to be used, a detailed content of all chapters has been agreed, and, where appropriate, data collection has been completed.

School of Management - data collection and analysis has been completed and you have started writing up analysis

Fees associated with writing up

There are two writing up fee levels: Continuation and Administration, both of which are a significant drop from the regular fee rate. The one you choose will depend on the level of supervision you will need and the extent to which you will require access to the Library. Please note that Tier 4 students who wish to stay in the UK to write up are required to transfer to the Continuation fee and maintain regular supervisory contact.

Continuation fee - requires continued supervision and use of University facilities at a reduced level.

Administration fee - no longer requires supervision or the use of University facilities

Whether you transfer to the Continuation or Administration fee, your supervisor will still be expected to provide a critical proof reading of your thesis, prior to its submission. In addition, a member of the supervisory team will be available for consultation with the Board of Examiners on the day of the examination, and your supervisor will be with you at the point the examiners tell you about the outcome of the exam.

Writing up fee levels can be found here . They are paid on an annual basis.

Approval process

You should consider making an application for transfer to writing up status at the earliest point, as changes of status may take time to be approved. In order to apply to transfer to writing up status and for your fee status to be changed you must:

complete the PGR10 form

ask your lead supervisor and your Director of Studies to sign the form to authorise the change in your status

submit the form to your Doctoral Programmes Administrator in the Doctoral College for consideration by Board of Studies (Doctoral) for formal approval.

Impact of change of status

You should note that if you are in receipt of funding, such as a full studentship or a fee waiver, this funding will end at the point at which you transfer to writing up status. You should also be aware that a change in your status may impact on your liability to pay Council Tax .

  • Step 3: Notice of intention to submit

At least two months before you intend to submit your thesis or portfolio, and before your registration period ends, you should complete the HD1 form, which can be accessed through your SAMIS in-tray.

By completing this form you are providing formal notice of your intention to submit, which then prompts your supervisors and Director of Studies to start the appointment of examiners process by nominating an appropriate internal and an external examiner. It will also alert the graduation team that you are likely to be completing in the near future, so your name can be added to the invitation list for the next available graduation ceremony.

Most students will receive an email notification, reminding them to complete the HD1 form, six months prior to their registration end date. Students on the DClinPsy programme will be told by their Programme team when and how to complete a version of HD1. If you wish to submit your HD1 form earlier than six months before your end date, please contact your Doctoral Programme Administrator in the Doctoral College.

  • Step 4: Restriction of access to your thesis

You should talk to your supervisor and/or funder about whether there is a need to restrict access to your thesis. Typical reasons for restricting access can include:

contractual agreements with companies or funders to not make findings public for a fixed period

deferral of open release of the e-thesis until after a paper’s publication

delay in making results public as they are being used to prepare patent applications.

If, for reasons of confidentiality, you want to restrict access to your thesis, it is possible to request a 12 month restriction. This applies to the electronic copy of the final thesis at the point when it is uploaded to the Library repository, Pure .

If you wish to secure a more comprehensive restriction of both the electronic and printed copies, or would like a restriction of a longer duration, you will need to make a formal request for approval from the Board of Studies (Doctoral) using the PGR7 form . On this form you will need to indicate why you need access to be restricted, and for how long.

The University has an open access policy on research outputs, and the expectation is that all theses/ portfolios will be available within the Library repository, therefore you will need to provide some details about why your work should not be shared. You will then need to submit the form to your Doctoral Programmes Administrator in the Doctoral College.

  • Step 5: Appointment and role of examiners

Your supervisors and your departmental Director of Studies are responsible for nominating a Board of Examiners for the viva voce examination of your thesis or portfolio. This team will consist of an internal examiner who is usually, but not always, an academic from your department, and an external examiner from another university or organisation.

The team of examiners may also consist of an additional examiner, as a condition of funding, or an independent chairperson who can be appointed when the Director of Studies considers that the presence of an additional academic would be of assistance.

Criteria for appointment and role of examiners

For information on the criteria for the appointment of examiners, see section 14 of QA7 . You can also find further information in QA7 (section 13) on the role of examiners.

Nominations for doctoral examiners will be submitted using the PGR13 form: Appointment of Examiners for Doctoral Research Degrees. This form includes details of who the proposed examiners are and what previous examination experience they have, and it is signed by the lead supervisor and the Director of Studies.

The appointment of examiners needs to be approved by Board of Studies (Doctoral) before a viva voce examination can take place, so this form should be submitted to your Doctoral Programmes Administrator in the Doctoral College in good time prior to the submission of your thesis or portfolio. When you submit your Notice of Intention to Submit form you might want to also check with your lead supervisor that they have begun the process of identifying potential examiners.

  • Step 6: Final preparation for submission

Word counts

The guidelines on word limits for final theses/portfolios vary by faculty or department. In order to be sure that you stay within any prescribed limits please consult the Doctoral College guidance document on word counts .

Plagiarism is a serious academic offence. You will have by now completed the academic integrity training and are expected to be aware of the rules around plagiarism.

All theses are checked for plagiarism using appropriate software. Whether it is detected by the supervisor when proof-reading a draft copy, or by the examiners in a thesis actually submitted for examination, QA53 (Examination and Assessment Offences) outlines the investigation process that will be followed if a suspected plagiarism offence is detected. The viva examination cannot go ahead until the investigation is completed, and where plagiarism is found to have taken place this may result in a disciplinary hearing where an appropriate penalty will be decided.

For a refresher on academic integrity whilst writing your thesis, see the Library guide on citing references and how to avoid plagiarism .

Seeking advice from your supervisor on draft(s)

The lead supervisor is responsible for advising you on the format of the thesis to be adopted and for carrying out a critical reading of the draft. When you are ready, your lead supervisor should read a complete draft of your thesis or portfolio and advise you of any changes or additions that should be made prior to submission. You may need to produce more than one draft before it is finalised.

You should give your supervisors not less than two weeks notice that you will be providing them with a copy of the draft thesis. They will need at least six weeks to read the draft and make their comments. The supervisor’s opinion is only advisory, and you have the right to decide whether to make any of the edits they recommend, and to decide when you are ready to submit your work for examination (subject to the requirements of the Regulations for the degree for which you are registered). Addressing the comments made by your supervisor does not guarantee that your thesis/portfolio will subsequently be passed by the examiners.

Specification for submission

There are detailed specifications for the presentation of a thesis or portfolio for examination and these can be found in Appendix 6 of QA7 . Please take note of these before submitting your work.

Printing / binding costs

You will need to print one hard-bound copy after the examination is completed. Information on the prices and process for printing your thesis/portfolio can be found here. You will be expected to bear the cost of printing this copy and as such may wish to speak with your supervisor about what assistance might be available.

  • Step 7: Submission of your thesis/portfolio

What do I submit?

You are required to submit your thesis/portfolio in electronic format to the Doctoral College Submission page in Moodle where it will be checked for plagiarism. If an investigation into a potential plagiarism offence has to take place, the examination process will be stopped until this is concluded.

You will also need to complete the HD2 form: Record of submission of a thesis or portfolio , and email it to your Doctoral Programmes Administrator. Upon receipt of the HD2 form, and your submission onto Moodle, the Doctoral College will email you, your supervisor and the Director of Studies to formally confirm receipt of your submission.

When do I submit?

You are strongly advised to submit before the last day of your formal registration period so that the examination process can be completed before your registration ends, and if you are a Tier 4 visa holder, before your visa runs out.

If you do not submit before your registration end date, you will have to seek permission from Board of Studies to re-register as a student.

Your registration end date can be found on your SAMIS page or you can check this with your Doctoral College Programme Administrator.

If your visa runs out before the examination process is complete, you may be required to obtain a new visa (such as a short-term study visa) or return to your home country. If this happens, it may be possible to return to the UK at a later date to attend the viva voce examination in person, or alternatively a video conference can be arranged to facilitate the examination.  Find out more about visas .

What happens to my tuition fees after I submit?

Tuition fees will no longer be incurred but may still be charged from the point of submission. Depending on the outcome of your viva examination, and the level of access you may need to supervision and resources in order to complete your corrections/revisions, you may be charged a writing up fee for the corrections period.

Do I have to start paying Council Tax after I submit?

Full-time students are exempt from paying Council Tax until their expected, or actual, end date of registration. If you submit your thesis/portfolio on, or close to, your end date, you will need to contact your Doctoral Programmes Administrator to request an examination extension, which will extend your end of registration date. The actual end date of registration will then be the day of the Board of Studies (Doctoral) meeting where your final award is approved.

  • Step 8: Preparing for the viva voce examination

Purpose of the viva voce

The main purpose of the viva voce is for you to defend the content of your thesis/portfolio and demonstrate your understanding of the broader aspects of the field of research and the subject of the thesis. It is an essential part of the examination process, and you must pass the viva as well as present a satisfactory thesis/portfolio in order to gain the award.

The examiners will test your ability to defend the work presented for examination. They need to ensure that your work is robust and that you fully understand the implications of your findings. They want to check the foundations of your research to ensure that the basic assumptions underpinning the work are sound, and that nothing major has been overlooked. Being able to discuss the work with you in person is of particular help if there is disagreement between the examiners about the outcome, or when the decision is marginal.

Think about the viva voce as more than an examination. It is an opportunity for you to discuss and develop ideas with experts in the field, to receive guidance on future publication plans and to receive constructive feedback on your work.

When should the examination take place?

The viva voce examination should normally take place within three months of the submission of the thesis/portfolio. Efforts will be made, where possible, to arrange the viva examination on a date convenient to all parties involved, and to minimise the amount of time a student has to wait for a viva examination.

You will be advised of the date of the examination as soon as possible after the thesis has been submitted. As a minimum, you will be given at least one week’s notice of the date of the exam. Those Tier 4 students on an Academic Technology Approval Scheme (ATAS) course who are coming back to the UK for their viva examination may require more notice, so that they can apply and receive their new ATAS certificate. The Doctoral Programmes Administrator for your department or programme/supervisor will work with the examiners to check availability and agree a date and time.

Where should the examination take place?

The venue for the viva voce examination will vary by discipline. In some cases it will take place in the office of the internal examiner. In other cases a room may be booked. In all cases, the venue should be a quiet, comfortable environment free from interruptions.

Video Conferencing

In certain circumstances, the use of video conferencing facilities may be permitted for your viva examination, although some programmes may have their own expectations with regards to the use of these facilities. This might be an option if you or your examiner are based outside the UK and for reasons of cost, time or restricted mobility are unable to travel to the University of Bath in order to participate in the viva exam at an appropriate time. Should you require further advice on this, or should you want to take advantage of this facility, you should contact your Doctoral Programmes Administrator as soon as you are notified of your viva date.

For further information on the use of video conferencing in viva examinations see QA7 Appendix 3 .

Who will attend?

In line with UK practice, the viva voce will be a closed examination rather than a public event. You and the examiners will attend, along with an independent Chairperson if they have been appointed. You may ask that your supervisor is permitted to attend the viva voce examination to provide moral support or reassurance, but they must not play an active role in the examination. If you want your supervisor to be in attendance you will need to notify the Doctoral College on your HD2 form at the point of submission.

Some departments may also require you to undertake a public lecture or presentation before your viva voce. Please contact your supervisor for further information about whether this applies to you.

Can I ask for adjustments to help me participate in the viva examination?

The University is responsible for ensuring that appropriate facilities are made available should you need them. Please raise details of any reasonable adjustments that you may require to enable you to participate fully in the viva examination at your earliest opportunity. These adjustments can be related to a long-standing disability or a short-term medical issue, for example a back problem. Student Services can provide you with advice about adjustments and will generate a Disability Action Plan to record the adjustments where appropriate.

  • Tips and advice for your viva voce

The following tips and advice will help you to prepare:

  • expect to be challenged!
  • be active - anticipate the questions that are likely to be asked in the viva examination
  • use your research skills to identify commonly asked questions, and, after they’ve proof-read the thesis, ask your supervisors to suggest some potential questions too
  • be prepared to discuss both the strengths and weaknesses of your work
  • if you’ve presented your work at a conference or departmental seminar consider the questions that other researchers have raised about your work
  • re-familiarise yourself with your examiners’ work in the field, as this can help you anticipate some of their likely questions
  • be ready to summarise their most significant findings or area of greatest strength in your thesis
  • be objective, and identify any areas of weaknesses within the body of work and be ready to discuss these, too
  • ask your supervisory team, fellow researchers, or doctoral students in your office to hold a practice viva voce examination, in order to gain experience in answering questions about your work.
  • re-read the thesis, particularly the first chapters that you wrote, in order to familiarise yourself with the contents once more
  • attend the DoctoralSkills workshop ' Preparing for your doctoral viva '. You'll discuss what is expected of you in the examination and there will be a Q&A session with experienced examiners. Alternatively, you can complete the online learning module . Find out more by emailing DoctoralSkills .
  • Further information about the viva voce

There are several useful resources in the library catalogue, the following list may be accessed online: Murray, R., (2009) How to Survive Your Viva: Defending a Thesis in an Oral Examination. Mansfield, N., (2007) Final hurdle: a guide to a successful viva. Potter, S., (2006) Doing postgraduate research.

The following Vitae guides may also prove helpful:

  • Finishing your doctorate
  • Completing your doctorate
  • Writing and submitting your doctoral thesis
  • Defending your thesis: the PhD viva
  • Thesis defence checklist
  • Thesis outcomes and corrections
  • I had my doctoral viva and I enjoyed it

ATAS requirements

If you are a visa-holding student on an Academic Technology Approval Scheme (ATAS) course coming back to the UK for your viva voce examination on a short-term study visa, you will need to ensure that a new ATAS certificate has been applied for, and received, in good time before making your new visa application. This includes nationals who are able to ask for permission to enter the UK on arrival at the border, rather than apply for a visa in advance. If you return to the UK for your viva voce without having a new ATAS certificate in place then it may not be possible to proceed with the examination.

  • Step 9: Examiners' role in the viva voce

What do the examiners do?

Once appointed, internal and external examiners will read your thesis and each complete a preliminary report which records their initial independent thoughts on the work presented for examination. The examiners will refer back to these reports when they ask you questions in the viva voce examination. After the viva examination is concluded, the examiners will ask you to leave the room whilst they make their decision. You will be called back in, with your supervisor, to hear the examiners’ recommended outcome of the examination.

Examiners are asked to assess doctoral candidates' research and confirm their research as:

  • making an original and significant contribution to knowledge
  • giving evidence of originality of mind and critical judgement in a particular subject
  • containing material worthy of peer-reviewed publication
  • being satisfactory in its literary and/or technical presentation and structure with a full bibliography and references
  • demonstrating an understanding of the context of the research: this must include, as appropriate for the subject of the thesis, the scientific, engineering, commercial and social contexts

And passing a viva voce examination on the broader aspects of the field of research in addition to the subject of the thesis

Examiners' Report

On the day of the viva the examiners will complete an Examiners’ Report, which summarises how the examination went, their recommended outcome, and any minor corrections or revisions that are required. It is not always possible for these to be outlined in detail on the day of the examination, so the full list of corrections/revisions may be supplied by the examiners up to two weeks later.

The Examiners Report, and corrections list, goes to Board of Studies (Doctoral) for consideration and approval, and until this point their recommendations are only provisional. The official outcome of the examination will be confirmed to you by email from the Doctoral College/Secretary of the Board of Studies (Doctoral).

More information about the role and responsibilities of the Board of Examiners and how the examination will be conducted can be found in the Guidelines for Research Examiners .

Contact with examiners

You should have no contact with your examiners prior to the viva voce examination, other than with the internal examiner to arrange the date and time of your examination. After the examination, advice and supervision in support of any required corrections or revisions will be provided by your supervisors, not the examiners. If needed, your supervisor or the Doctoral College can liaise with examiners on your behalf.

Please note that examiners usually need between four and six weeks to read a thesis and prepare for the examination. Later, when presented with a corrected thesis, the internal examiner may take up to four weeks to determine whether the corrections have been done satisfactorily. Examiners should not be pressured to set an early viva date, or examine to a foreshortened schedule.

  • Step 10: Possible outcomes of the viva voce examination

The Board of Examiners will agree a recommended outcome following your viva examination. The list of potential outcomes of the examination are set out fully in both QA7 Section 17 and Regulation 16 but in summary, the examiners can recommend to:

  • award the degree
  • award the degree subject to satisfactory completion of minor corrections. These will either be of a trivial or typographical nature, or of a significant or substantial nature (but do not require major re-working of the intellectual content of the thesis/portfolio)
  • award the degree subject to satisfactory performance at a second viva voce examination and the satisfactory completion of any minor corrections to the thesis/portfolio. If the recommendation is to attend a second viva, the date will be arranged at the convenience of all involved
  • request that a revised thesis/portfolio be submitted before recommendation of the award can be considered. The Examiners may require the student to undergo a second viva voce examination, but may choose not make this decision until the revised thesis has been received and considered
  • award a lower degree (MPhil), subject to any minor revisions to the thesis/portfolio (not currently available for the DBA)
  • defer the decision to a Board of Examiners for the taught stage of the programme (for DBA, DHealth, DPRP and EdD)

Communication of the recommendation

You will be informed verbally of the recommended outcome by your examiners following the viva examination. Your supervisor should be in attendance at this point. The outcome is unconfirmed, and subject to approval by the Board of Studies (Doctoral).

You will have 30 days from the date of written notification of the outcome of the examination to complete minor corrections of a trivial or typographical nature and return them to the internal examiner.

In cases where the examiners require substantial amounts of work to be completed, the examiners will send their report and the details of the corrections/revisions to the Board of Studies (Doctoral) for consideration.

The Board of Studies (Doctoral) is responsible for checking that the examiners’ recommended outcome is supported by what is written in their report, and that any significant minor corrections or thesis revisions specified by the examiners may reasonably be expected to be completed within the time allowed. Written notification of the outcome of the exam will then be sent to you, and you will have up to 12 weeks to complete minor corrections of a more substantial nature, or up to 12 months to complete a revised thesis. You can find out more about Corrections in Step 12.

It is important that you meet the deadline for submission of your corrections or revised thesis, failure to do so may result in a fail outcome. In exceptional circumstances you may request an extension to the deadline for submitting the corrected or revised thesis/portfolio. Please contact your Doctoral Programme Administrator for information. If you have a disability access plan that relates to your ability to meet the deadline, please contact your Doctoral Programme Administrator.

  • Step 11: Approval by Board of Studies (Doctoral)

The Board of Studies (Doctoral) normally meets approximately every four-six weeks. You will receive formal notification of the outcome of your examination shortly after it is approved by Committee.

You are permitted to use your new academic title of ‘Doctor’ from the point at which you are awarded your degree by the Board of Studies (Doctoral). You will no longer hold student status from the date of the Board of Studies meeting where your award is approved.

You can appeal against an academic decision made by the Board of Studies (Doctoral) about your degree award. Regulation 17 sets out the grounds, process and timescales for which you can do this.

If you wish to raise an issue you are encouraged to:

speak with your supervisor or Director of Studies

seek independent advice from the Students’ Union Advice and Support Centre

-seek advice from the University Independent Advisors for Postgraduate Research Students

  • seek support from Student Services

-speak to the Doctoral College .

  • Step 12: Corrections to your Thesis or Portfolio

No Corrections

If no corrections are required, you will need to submit a hardbound copy of your final thesis/ portfolio to your Doctoral Programme Administrator in the Doctoral College and an electronic copy to Pure , before the outcome of your viva examination can be approved by the Board of Studies (Doctoral) - see Step 13, below.

Minor Corrections

Depending on the outcome of your examination, you may be required to complete some minor corrections. It is uncommon for a thesis or portfolio to be accepted without requiring some form of correction following the examination. Minor corrections can either be trivial or typographical where you are normally given 30 days in which to make the changes. They can also be more substantial, where you normally receive up to 12 weeks to complete them.

When the minor corrections are completed, you will need to submit the corrected thesis to Moodle.

The internal examiner will then determine, on behalf of the Board of Examiners, whether the corrections have been completed satisfactorily, and whether you may now receive the award. It may help your examiner to do this if you complete the corrections in a different colour ink, and/or provide a document listing how each of the required changes has been addressed.

The internal examiner will update the examiners’ recommended outcome, and inform the Doctoral College. The Doctoral College will email you to inform you of the recommended final outcome that will go to Board of Studies (Doctoral) for approval. When you receive this email, you should start the process of printing a hardbound copy of your thesis and uploading an electronic version to PURE (see Step 13 below).

Revised thesis/portfolio

If the recommendation is to submit a revised thesis/portfolio, you will be given a reasonable time frame to complete the work, usually up to 12 months. You may also be required to attend a second viva. Before this deadline expires, the revised thesis or portfolio should be submitted to Moodle and paper copies presented to your Doctoral Programmes Administrator in the Doctoral College, in the same way as you did for the first submission.

Extension to your deadline

  • Step 13: Submitting Your Final Thesis or Portfolio

Submitting a hardbound thesis/portfolio

Once your examination has been successfully completed, the final version of your thesis or portfolio should be submitted in hardbound copy to your Doctoral Programmes Administrator in the Doctoral College, along with a completed HD3 form before the final outcome can be approved by the Board of Studies (Doctoral).

You need to check the requirements for the colour of the hardbound case before proceeding with binding - see section 5iii of the thesis specifications document . Your hardbound thesis/ portfolio will be deposited in the Library by your Doctoral Programmes Administrator, and access will be subject to any approved restrictions. You are expected to cover the cost of printing the hardbound thesis yourself. Find further information about printing and binding a thesis here .

Uploading electronic thesis/portfolio to Pure

You will need to make the electronic copy of your thesis or portfolio publicly available by uploading it to the University’s research information system Pure . The Library provides guidance on how to deposit your thesis with the library , including details on how to request a 12 month restriction to the electronic version.

  • Step 14: Graduation

You will be contacted about the graduation ceremonies by email.

If you receive an invitation but have yet to have your final award approved, these invitations will be provisional. Deadlines for actions that must be completed before you are eligible to attend a graduation ceremony can be found here .

Your Bath student email address will be deactivated a short time after the Board of Studies (Doctoral) approves your award, so it is really important that you provide an alternate contact address within your SAMIS record. You may wish to switch to BathMail which is an @bath.edu email address that is exclusive to University of Bath graduates. Graduating students will automatically be sent a BathMail username and password to their student email account before it is deactivated.

Graduation Ceremony

The University holds graduation ceremonies twice a year, in December/January and July. Find more information on the dates of future ceremonies .

See eligibility to attend graduation ceremonies and doctoral deadlines for graduation ceremonies for more information.

If you are interested in attending a specific ceremony, please contact your Doctoral Programmes Administrator who will be able to inform you of the deadline for that ceremony.

See doctoral deadlines for graduation ceremonies , for more information on the next ceremony.

Preparation for Graduation

You can find out further information about how to prepare for your graduation ceremony . You should not book your travel until you have received confirmation that your successful outcome has been approved by Board of Studies (Doctoral) and the Graduation team have confirmed you have a place at the ceremony.

Certificate

Your degree certificate will be generated once the Vice Chancellor formally confers the award, following Board of Studies approval. Conferment is timed so that certificates can be released for the graduation ceremonies. If you decide not to attend a ceremony, or your ceremony is a while away, you can find out more information about receiving your certificate here .

Your Graduation certificate will include the following information: - your full name

degree awarded (such as Doctor of Philosophy)

date awarded

signatures from the Vice Chancellor, Director of Academic Registry and the Pro-Vice-Chancellor (International & Doctoral)

Please note that the University of Bath Doctoral certificate does not specify the subject studied.

Alumnus status

All graduates, former staff and students who have studied at Bath for at least one semester are members of our alumni community . Alumni receive invitations to events, regular updates about the latest news from campus and opportunities to get involved with University life.

There are University of Bath alumni groups or networks in more than 40 different locations around the world. Activities vary in each city or country, from an online network to a Chapter - where an international volunteer committee organises a programme of events for local alumni. Getting involved can be a great way to make new contacts and widen your social or professional circle.

University of Bath alumni can use the Sports Training Village and Library, which offer discounted membership and special rates to alumni. Alumni are also able to use the University Careers Service. To access these services you will need to provide your alumni ID number or other proof of alumni status, available by contacting the Alumni Relations team .

  • Further information

During the above timeline, you may also be thinking about your next steps after your doctorate, in terms of your career. The University Careers Service can provide support and guidance and specialist careers information.

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Top 12 Potential PhD Viva Questions and How to Answer Them

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Breathed a sigh of relief after submitting the PhD thesis you’ve burnt the midnight oil for? Not so soon! While submitting your thesis is a massive achievement, defending it decides whether you will receive the doctoral degree or not. Although every PhD viva examination is different, there are similarities in the types of questions asked at each. In this article, we shall discuss the most common and potential PhD viva questions and how to answer them.

Types of PhD Viva Questions

Generally, examiners prepare a series of questions for you to answer at the PhD viva voce examination. These questions are primarily based on your thesis. However, the questions asked in PhD viva examinations can be broadly grouped under four basic headings:

  • General Questions
  • Research Context and Methods
  • Analysis and Findings
  • Discussions and Conclusion/Implications

Therefore, while preparing for your PhD viva and defending your thesis , you must consider the types of questions you’re likely to be asked. This helps in practicing your answers in advance and not being baffled during the viva. Practicing how you would answer questions based on these four basic categories will take you a long way in your preparations.

Commonly Asked PhD Viva Questions and How to Answer Them

While sticking to answering the most commonly asked questions might sound simple, it is equally important to be prepared for counter questions. Furthermore, it’s easy to go off on a tangent due to nervousness. This leads to opening up other lines of enquiry from the examiners in areas you hadn’t probably expected to be questioned about.

Ideally, you aren’t expected to dictate your thesis as it is. Examiners are interested in knowing your understanding of the research, its methods, analysis and findings, conclusion and implications, etc.

Despite the differences in every PhD viva, you must be prepared to answer these common questions logically. Below are some popular PhD viva questions to prepare:

1. Tell me about yourself.

Introduce yourself and talk about your areas of interest related to research. More importantly, focus on the areas you are extremely positive about. Briefly speak about your past achievements without overwhelming the examiners and sounding boastful. Keep the introduction professional.

2. What is the reason for selecting this research question?

The response to this question is often generalized by saying that you are interested in the topic. However, examiners want to hear the specifications of your interest in the topic. You must plan your answer stating the most interesting aspect of your research and why did you choose the research question over another topic from the same or allied domain. Furthermore, cite certain instances that helped you in selecting the research topic and the particular field for your project.

3. What is the key focus of your research?

Remember that the answer to this question is not about summarizing your research. It involves talking about the area of primary focus of research. Most importantly, in order to demonstrate the viability of your research, it is essential to identify some of the key questions it addresses.

4. Did the research process go as per your plan or were there any unexpected circumstances that you had to deal with?

The purpose of this question is not only to see whether you can work as per your structured plan, but also to understand your readiness with backup plans in case of unforeseen situations. An ideal way to answer this is by clearly stating if the project went as per your predefined plan. Furthermore, be honest in mentioning if you were assisted by others in dealing with it, as it may lead to a new set of questioning from the examiners.

5. After completion of your research, which part of the process did you enjoy the most and why?

Remember that the examiners know about a PhD student’s stressful journey . Therefore, do not elaborate on the hardships that you went through during your research, unless asked otherwise. Emphasize on the aspects of the research project that you enjoyed and looked forward to every time you stepped in your laboratory. Describe how you developed interest in newer approaches to conduct research.

6. As a researcher, what change has this research brought in you?

This question demands a strong, progressive, and positive response. Remember your first day in the research laboratory and compare it to today. Identify the differences in your traits as a researcher. Mention how following, reading, and analyzing other researchers’ works have brought a positive change in you. Furthermore, address how you overcame your shortcomings as a researcher and upskilled yourself.

7. Summarize your thesis.

Be well versed with the entire project. Start by explaining why you selected the topic of your thesis and close your explanation by providing an optimum solution to the problem. You must prepare for 3 types of answers for this question. Prepare a 1-minute, 3-5 minutes, and 10-minute summary and use the correct one based on your audience at the viva.

8. What developments have you witnessed in this field since you began your doctorate? How did these developments change your research context?

Familiarize yourself with the advances in your field throughout your PhD. Mention works of researchers you have referred to while working on your project. Additionally, elaborate on how other researchers’ work influenced your research and directed you to finding results.

9. What original contribution has your thesis made to this field of study?

Answer this question by keeping in mind what was known before in published literature and what you have added as part of being awarded your PhD. Firstly, you must present a major piece of new information during your research project. Secondly, elaborate on how your research expands the existing literature. Thirdly, mention how your work is different from other researchers’ works that you referred. Finally, discuss how you developed a new product or improved an existing one.

10. How well did the study design work?

While answering this question, you must focus on how your planned methods and methodologies were executed. Furthermore, mention how you tackled difficulties in study design and concluded your research.

11. Elaborate on your main findings and how do they relate to literature in your field?

While answering this question, elaborate on how you evaluated the key findings in your research. Mention the key factors involved and the reason for choosing a particular process of evaluation. Furthermore, explain how your findings are related with the literature review of your project. Mention its significant contributions in your field of research. In addition, discuss how your research findings connect with your hypothesis as well as the conclusion of your research.

12. What is the strength and weakness of your research?

While you may want to impress the examiner by emphasizing on the strengths of your research, being aware of the weaknesses and planning a directional move to overcome them is also equally important. Hence, mention the strengths first and elaborate on how they connect with the key findings. Additionally, underline the limitations and the factors that could be transformed into strengths in future research.

How nervous were you while preparing for your PhD viva voce? Did you follow any specific tips to ace your PhD viva voce ? How important is it to prepare for these common PhD viva questions beforehand? Let us know how you prepared for your PhD viva voce in the comments section below! You can also visit our  Q&A forum  for frequently asked questions related to different aspects of research writing and publishing answered by our team that comprises subject-matter experts, eminent researchers, and publication experts.

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Really useful in helping me put a plan / script together for my forthcoming viva. Some interesting questions that I hadn’t thought about before reading this article – the proof of the pudding will be how well the viva goes of course, but at least I now have a head start! Many thanks

Thank you, this is super helpful. I have my viva voce in a month and I’ll be using these questions as a guide

Well framed questions

This article has been incredibly helpful in preparing a plan and script for my upcoming viva. It introduced me to several intriguing questions I hadn’t considered before. The real test will be how well the viva goes, but at least I now have a head start. Thank you.

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how long will my viva be?

This is a guest post from Dr Paul Spencer. Paul is a Researcher Development Manager at the University of the West of England, Bristol (UWE). His own successful PhD viva in oral microbiology took a shade over 4 hours!

So how long will my viva be? This is a question I get asked regularly whenever I run a workshop on preparing for the final viva voce examination. The short answer to this question is “it depends”…

In my experience, there is a lot of variation between disciplines. Vivas in science/technical subjects tend to take longer which is perhaps surprising given that the thesis word constraints for these tend to be half that than in humanities and social science disciplines. I also think that examiners adhering to evolved disciplinary norms conduct vivas in a variety of ways going beyond what might be considered examination. Taken together these factors contribute to the variation in viva length and, more often than not, it does not follow that the longer a viva takes, the more likely it is to indicate a negative outcome.

Yet to delve into this question properly, we need to take a step back and first ask a different question, “What is the viva voce examination for?” The purpose of the viva, taken with the preliminary assessment of the submitted thesis, is to give the examiners an opportunity to establish whether the candidate has met the criteria of a doctoral award. These criteria, in the UK, are derived from a common set of descriptors set out by the Quality Assurance Agency in the appendix of the publication Doctoral Degree Characteristics (September 2011). The majority of universities will have these descriptors, or something very close to it, in their research degree regulations.

I’ll paraphrase my own institutional doctoral descriptors to illustrate:

1. An original contribution to knowledge as shown by scholarly review by recognised scholars in the field 2. A critical understanding of the current state of knowledge in the field 3. Ability to conceptualise, design and implement a project capable of delivering an original contribution to knowledge 4. A critical understanding of the methodology of enquiry 5. Has developed independent judgement of issues and ideas in the field of research and is able to communicate that 6. Can critically reflect on the work and evaluate strengths and weaknesses

I think it important to unpack these criteria in order to understand what is “doctorateness”. When writing about this in their book “Stepping Stones to achieving your doctorate” , Trafford and Leshem advocate starting with the end in mind to inform how you would write your thesis. I always remind doctoral students that the purpose of your thesis is to convince your examiners that you meet the criteria for the doctorate especially as examiners tend to base their opinions about satisfying the criteria on the thesis (Tinkler & Jackson, 2001).

The first is what most recognise as being the primary objective of a doctorate but note it is dependent on satisfying scholarly review by the examiners. This is why the examiners are often portrayed as gatekeepers to the academy (Tinkler & Jackson 2000).

The second of the criteria is about making sure the candidate understands where their work starts and others’ finishes, it is difficult to make a claim of originality without this. At doctoral level this means going beyond listing published literature, something that Pat Thomson explored more fully here .

The third and the fourth descriptors are related concepts and are important to justify in both the written thesis and in the viva itself. They are different and to quote another of Pat’s blog titles that look at this in more detail, Methodology isn’t methods .

The fifth of these descriptors is about confirmation of authorship of the thesis, the ideas and the justification. This is oft stated as a key function of the viva voce (latin for ‘live voice’) examination, to reassure examiners that it was the work of the candidate. It is also about the voice of the candidate, their opinions, thoughts and perspectives not that of their supervisors, colleagues or peers.

Lastly, the fifth descriptor is about the limitations of the research, the positives of the research, the roads left untraveled, possibilities of where the research could go. This has potential to form a long discussion in some vivas.

If the role of examiners were to simply ensure that the doctoral criteria were met, then vivas would always be straightforward and undertaken in a short time span. The fact that sometimes they aren’t suggests other factors are at play. Here’s what I think they are:

• Strength of the thesis – well written? A poorly written thesis will take longer to examine – the candidate will need to spend more time defending their position in order to demonstrate doctorateness. Here’s some thoughts from Professor Gina Wisker on that theme. • Intellectual battle? Some doctoral candidates wish to be examined by ‘the most recognized scholar in their field’. • An opportunity to explore issues and debates in the broader context of the field? • Potential collaborator? – some examiners are selected because of the potential to form future collaborations (either with the candidate or their supervisors). I think this is why many science/technical vivas go on for a long time, many research collaborations are formed as a result.

So, let’s return to the question, “how long will my viva be?” It depends… on who your examiners are, why they were selected, how well written your thesis is, how well you can demonstrate ownership, how much you want to engage in debate/discussion about the context of your work and where/how far do you want to take your research with a new found collaborator?

References Penny Tinkler & Carolyn Jackson (2000) Examining the Doctorate: Institutional policy and the PhD examination process in Britain, Studies in Higher Education, 25:2, 167-180, DOI: 10.1080/713696136 Carolyn Jackson & Penny Tinkler (2001) Back to Basics: A consideration of the purposes of the PhD viva, Assessment & Evaluation in Higher Education, 26:4, 355-366, DOI: 10.1080/02602930120063501 Trafford, V., & Leshem, S. (2008). Stepping Stones To Achieving Your Doctorate: By Focusing On Your Viva From The Start : McGraw-Hill Education.

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5 responses to how long will my viva be.

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J H Watts’ (2012) abstract for Preparing doctoral candidates for the viva:issues for students and supervisors criticizes the lack of rigour in the viva. There are many issues with the exam. Here is the abstract from the article: The PhD viva has been described as mysterious (Burnham 1994; Morley et al. 2002), unpredictable (Rugg & Petre 2004) and potentially frightening for students (Delamont et al. 2004), with its form and duration a function of the predilections of individual examiners as well as a function of differences across disciplines. Despite its myriad manifestations, the PhD viva voce (live voice), as oral examination of the doctoral thesis, constitutes the final ‘test’ of the PhD endeavour. In the UK, this is a private event, though in some countries such as Belgium and the Netherlands, for example, the viva is conducted in a public arena (Delamont et al. 2004). Although there is no standard or prescribed format, students across all disciplines can expect to defend their thesis through a process involving questioning, clarification and discussion of key elements. This critical commentary discusses a number of issues that inform the preparation of students, focusing on the role of the internal and external examiner, the viva voce process, guidance for students and some practical suggestions for supervisors and students, particularly the value of full role-play in building students’ confidence. The extent to which the doctoral viva, in its current ‘secret’ form, can be seen as a fully accountable and independently rigorous process is taken up in the conclusion that highlights the phenomenon of ‘cosy’ reciprocal examining arrangements, the spectre of litigation when things go wrong and the need to consider a fundamental review of both the purpose and conduct of the viva. Journal of Higher Education, (36) 3, pp 371-381.

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Diana Leonard, Louise Morley and Miriam David studied vivas in the early 2000s and raised these issues. They’re rather oddly cited above in the abstract. See the original on http://www.textjournal.com.au/speciss/issue22/Morley&Leonard&David.pdf . They make the argument about quality much as is made here in conclusion, and they do need to be credited with raising the whole viva quality question.

Thank you so much for the reference. The Leonard, Morley and David article from the early 2000s takes on a less crisis-driven tone than the Watts’ piece. Nonetheless, many of the concerns raised overlap in the two pieces even though more than a decade divides them. If Watts’ abstract rings less lucid to you, it shows that the ‘standard’ varies in the quality of abstract writing amongst academics. Indeed, it does. From the Watts’ article I got the idea that the viva voce appears to be a carryover from a time when universities housed scholar-eccentrics, like something out of Harry Potter. The viva voce represents an initiation right, a torture test,an inquisition, a David and Goliath contest to get past the gatekeeper-ogres all in one. It is the price to become a member of the club. This cartoon captures the potential absurdity of the viva voce. Sorry I couldn’t paste it directly into this comment.

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However long it is at the time it will feel too long, afterwards you’ll feel it was not long enough.

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I had my viva in September 2014. My internal examiner informed me that it would take two hours and that I would be allowed to take 30 minutes break if it took longer. Surprisingly, the two hours passed quickly. It felt more like 20 minutes.

Good luck to all doctoral candidates who will be defending their theses soon.

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Shortest & Longest PhD Vivas

We're after tales of peoples PhD viva experiences. In particular we'd like to know about any that were so long you needed to stop for lunch.

Hey Andy. The longest I know of in our department was 4 hours, but that ended up as a revise and resubmit, so there were obviously problems with it. I believe our department now has a time limit of 2 hours for a PhD viva. On the short side of things, my chairperson said she had chaired a PhD viva which only lasted 20 minutes simply because everything was so perfect that the examiners ran out of questions at 20 minutes. Recently a friend of mine had a viva which was finished off outside because the fire alarm went off, but I don't know of anyone who had to stop for lunch! Best, KB

Avatar for sneaks

my hubby's viva was about 2 hours, so not that long. It included a 20 min presentation. I waited nervously outside for him though and I knew it wouldn't take that long because his sup had scheduled it for 12, so I knew they'd get hungry and want to stop before lunch!

Mine was 3 hours and I passed :-)

Mine was very short. Just 1 hour and no more. Though that was partly for disability purposes: I'd have struggled with anything longer, due to brain damage from a progressive neurological disease. I'd have lost the ability to properly represent myself in a longer viva. So it was kept nice and short.

In our institute the norm is 3 to 4 hours. I will have my viva in less than a week and officially booked for 4 hours but it can last longer. The longest I saw lasted 6 hours + lunch break. But vivas of 5 hours are not so uncommon here. The length is not related with the quality of the thesis and the outcome of the viva.

Quote From blue: The length is not related with the quality of the thesis and the outcome of the viva. I completely agree with this- I think often the length of the viva is more to do with the examiners' interest in the project than their opinion of it and the overall outcome. Personally, I think if you can only come up with 20 minutes worth of questions (as in the case my chairperson was telling me about) then surely you could at least engage in some relevant discussion for a while longer?! From what I've heard from others in the department, much of the viva consists of discussion about next career steps and potential future projects etc, once the 'official' questions are over. Best, KB

Quote From keenbean: From what I've heard from others in the department, much of the viva consists of discussion about next career steps and potential future projects etc, once the 'official' questions are over. That's what happened in my viva. Remember it was cut down to an hour for disability reasons. But out of that hour, about 40 minutes was for the initial discussion/questioning, even though they told me at the start that they were minded to pass me subject to minor corrections. Then the last 20 minutes was a discussion where I took the chance to ask them for advice on areas most worth publishing etc.

Avatar for Mackem_Beefy

======= Date Modified 07 Jul 2011 08:27:52 ======= PART 3: Anyway, back to supervisor’s secretary and she’s first to know and congratulate me. I’ve now one thing on my mind, I’ve got to get to Sunderland by 7 pm for a 7.45 pm kick-off. I’m into the loo, out of suit and into normal gear and Sunderland strip within three minutes. I return to the main office to tell a few other people to find my supervisor and external heading into his office. “That was quick, what’s with the clothes?” “I’ve got to get my priorities right, I’ve a football match to go to.” Supervisor says “He’s a Sunderland supporter.” “Oh!!!” she says. I suspect she's not as immune to football as many women, but I refrain from pushing the issue. So off I go. I join up with my mum (also a supporter) and we go to the match. She asks how things went and I respond “I passed, now can we get to the footy? Besides I rang you earlier” (Truthfully, I couldn't remember if I had!!! As it happens, I had remembered, phew!!!) I need not have bothered going. Sunderland were the better team, but thanks to a certain referee from the dorty Leeds (second hate team after Newcastle) called Mark Prosser we were down to ten men and had to settle for a 3 – 3 blasted draw against Preston North End (we were Championship back then)!!! It says something about my passions when I say that man completely spoilt my day. The football phone in on local radio was subjected to a huge moan about the game (just the game). Back to the corrections, done the following day. Printing out is a different matter (as was the case with the pre-viva submission), another couple of days, internal examiner verifies corrections, following day up to bindery in neighbouring University, paid extra to get the binding of the hard copies done quickly and finally after ten days, hard copies submitted and paperwork signed off. So March 10th , it was all over (I actually had in my head it was 10 days it took me rather than 7, however, the dates check out differently)!!! It need not be a dour day and a few elements of unexpected humour can go a long way!!! Also, a serious remark is having the football to go to after was actually a big help as I had something else to think (or worry) about. AND APOLOGIES TO ALL, FOR THE LENGTH OF THE STORY. :-)

======= Date Modified 06 Jul 2011 22:16:37 ======= PART 2: After 20 minutes, the nature of the questioning makes it clear there don’t appear to be any major issues. That said, I’m still tense. As the via proceeds, minor movements in the room only sort of half register, my supervisor stooping, the apparent silence of my external who seems only to nod his head and agree with my external at best, my external crossing her legs (huh?), my supervisor fiddling with his glasses, a rustle of paper here and there as various aspects of the thesis are discussed. I guess you become hypersensitive to movements and other things when tense, however, nothing registers as you're so absolutely focussed on the job in hand until possibly after it's finished. It’s clear this is evolving into a discussion rather than an exam and I find myself thinking “Do nothing stupid and you might just get through this!!!” I privately expected to be told to reproof read the document and resubmit in six months, from the errors I picked up and this eventuality I’m ready for. Then bag, 2 hours in, the external hits with my opinion on a question on a key piece of literature and I think “Oh hec, now the exam begins!!!”. My supervisor moves in to counter and kill the question dead with a bit of general discussion of his own, however, amazingly I renavigate the discussion back to the question. Have I just committed suicide? Nope, I was better prepared than I thought and I expressed my opinion (I’ve since written papers on the subject), however, supervisor and examiners wanted to move on. So I think leave be, I’ve just got away with what could have been a tactical error and I am still a bit stressed. The discussions go on for another 2 hours and 20 minutes, the length of the exam clearly due to the external’s interest in the subject. Finally, at 1.15 pm, a halt is called. I’m asked to leave the room and before the door is closed, all I hear is the external examiner saying “A lot of data.” The door is closed and the registrar appears to keep me company. We exchange a few words and then he is called in. I privately think “So another six months then!!!” Then the door opens and I’m asked back in. A comment is made to fetch lunch into the room. “Congratulation Dr. Beefy, would you like to take a seat!!!” Streuth, I’ve done it!!! “We would like a few amendments, so how long do you think it will take to do them.” I think “Oh no” and say “Three months?” Another tactical error? Smiles all round, I am still stressed!!! “These are the corrections we would like you to make.” Three typographical errors are listed, one a repeat error but still only 20 minutes work as it's a 'Find and Replace' in Word. Whey hey, I’m through!!! “Oh” said the external examiner “I’ll be hoping for lots of papers from your data.” “Okay” I said. I have since honoured that promise (partially a way I might add of establishing intellectual ownership). The last (ever?) paper I'm awaiting referee's remarks at the moment. I stay for lunch when asked, simply because I’m too stressed to think straight, but after hardly touching the food finally leave. I’m still shaking, but I’m recovering my thoughts. Then my thoughts drift back over the viva. Suddenly my thoughts go back to those little movements in the room and the external crossing her legs. Streuth, my external was wearing stockings!!! (As for my external’s attire, I’ve only told a few close mates about that. My best mate said “Stockings? How did you concentrate?” I replied, “You’ll never understand how stressful Ph.D.’s are and that was furthest from my mind whilst I was still in the exam, the penny dropped only afterwards.” Anyway, a very minor point.)

======= Date Modified 06 Jul 2011 10:27:09 ======= NOTE: Actual years deleted, but it was a few years back (though not that long ago!!!) PART 1: My viva started at 9.00 am on March 3rd and finished at 1.20 pm. Lunch was brought in straight after. Exact timings show how stressed I was!!! Nothing in my life works out in a straight forward way and a few elements of humour and a few odd happenings certainly helped what was a tense day. I'm one of these people strange things happen to, simple as!!! I knew who my external examiner was 4 months before I submitted and 7 months before the actual viva. She was a leader in the field and friendly with my primary supervisor. Unusually for a scientist, she was (is still) quite attractive and well known clothes shopaholic. Three changes of outfit a day at a conference in Italy in 2000 says it all!!! But I'll come to that later as she committed a little fashion faux pas. It was a matter of getting the thesis written up and submitted, as expected a fraught process. My primary supervisor was not going to let me submit until he was 99% sure I would pass with at worst minor corrections. The whole writing up process took a total of 18 months whilst I was also trying to carry out post-doc duties. Draft rejected, draft rejected, draft reject, finally draft accepted with a few bits of red pen to correct. There was even the threat of primary and secondary supervisors swapping roles as my primary was in the process of retiring (this didn't happen). But finally, December 17th at 3.30 pm I submitted. I got home after submission and my mum's first actions were to grab my books and say "You get to look at these after Boxing Day, it's Christmas!!!" Anyway, it's the day after Boxing Day and I crack on. I was given a list of subjects (including experimental techniques and anything I might be expected to know) as well as the thesis material itself to swat on. I was told to keep a log of errors I found in the thesis, which I would amend in the thesis before viva to minimise corrections after viva. Still stressed, but write up out the way (I could take the odd day off), I prepared as thoroughly as I could for the viva. But lo and behold, a knock-back, no date. What had happened? My primary supervisor had requested a delay to allow him to concentrate on a major seminar being hosted by my University. I understood, but still "$#!+!!!" But finally a date is set - Wednesday March 3rd at 9.00 am. Okay, I'm going to miss a Sunderland home game on the Tuesday night for last minute swatting. Er, no I'm not as I find out the game has been switched to the Wednesday after my viva. So plan is viva then to match regardless of outcome (that said, I know me and would have still gone on the Tuesday, as there's only so much swatting you can do). The day comes and I arrive suited, with back pack containing notes, list of corrections, initial submission version of viva and tucked in very bottom, top, jeans, trainers, Sunderland season ticket and Sunderland top. I leave my match gear with my primary supervisor's secretary (and also friend of mine) and take PhD material along to viva room. Primary supervisor, internal examiner and external examiner are all waiting, despite me being exactly on time. Registrar makes a few comments about procedure should there be more than minor corrections and disappears. This is where the stress levels are really rising and I am like a wound up spring!!! So we sit down and start. Presentation needed? I have one prepared? No. I reach for the list of corrections. Supervisor frantically signals for me to lose them so I do. So off we go. My external’s latest outfit (from her extensive shopaholic wardrobe)? An unremarkable skirt suit (unusually sober for her), boots, dark hosiery – that becomes important later (a moment of humour let’s say).

I have heard it happen at my uni where the examiners went off to lunch before telling the person whether they had passed or not - not sure if the viva was continued afterwards or not or just the decision was given. I have also heard that food was brought into another one. You may get a break in the middle or yours if it's going to be long and you can request one if you think need one (but resist the temptation to run away!)

Quote From Doodles: I have heard it happen at my uni where the examiners went off to lunch before telling the person whether they had passed or not - not sure if the viva was continued afterwards or not or just the decision was given. I have also heard that food was brought into another one. You may get a break in the middle or yours if it's going to be long and you can request one if you think need one (but resist the temptation to run away!) Unless there were issues they wish to discuss about the viva, that seems cruel beyond believe. It sounds a little like 'Who wants to be a millionaire' where Chris Tarrant tells the contestant 'I'll tell you after the break!!!'

haha how to keep the suspense going! Can you phone a friend, ask the audience though not a wise idea as that'd your examiners or go 50:50? I think there was some drama with it but I didn't find out until a good while later and not the full details either. It's part of the urban myth! Though it was pretty harsh leaving the poor person hanging around!

I'm way off my own viva but while waiting to go in for my research plan approval meeting (I was terrified) my supervisor told me that her viva was only 20 minutes with no corrections, and that it was good psychologically because they were running late and she was early so they kept her waiting for about 10 minutes - a really small thing but she said that it puts you into a better position; they were running late for my meeting as well. Hopefully I'll have something a bit more interesting to add to a thread like this in the future, and I'm enjoying reading about others' viva experiences. Beefy: I wonder if she tactically thought about wearing stockings or whether she does all the time?!

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how long are phd vivas

  • PhD Failure Rate – A Study of 26,076 PhD Candidates
  • Doing a PhD

The PhD failure rate in the UK is 19.5%, with 16.2% of students leaving their PhD programme early, and 3.3% of students failing their viva. 80.5% of all students who enrol onto a PhD programme successfully complete it and are awarded a doctorate.

Introduction

One of the biggest concerns for doctoral students is the ongoing fear of failing their PhD.

After all those years of research, the long days in the lab and the endless nights in the library, it’s no surprise to find many agonising over the possibility of it all being for nothing. While this fear will always exist, it would help you to know how likely failure is, and what you can do to increase your chances of success.

Read on to learn how PhDs can be failed, what the true failure rates are based on an analysis of 26,067 PhD candidates from 14 UK universities, and what your options are if you’re unsuccessful in obtaining your PhD.

Ways You Can Fail A PhD

There are essentially two ways in which you can fail a PhD; non-completion or failing your viva (also known as your thesis defence ).

Non-completion

Non-completion is when a student leaves their PhD programme before having sat their viva examination. Since vivas take place at the end of the PhD journey, typically between the 3rd and 4th year for most full-time programmes, most failed PhDs fall within the ‘non-completion’ category because of the long duration it covers.

There are many reasons why a student may decide to leave a programme early, though these can usually be grouped into two categories:

  • Motives – The individual may no longer believe undertaking a PhD is for them. This might be because it isn’t what they had imagined, or they’ve decided on an alternative path.
  • Extenuating circumstances – The student may face unforeseen problems beyond their control, such as poor health, bereavement or family difficulties, preventing them from completing their research.

In both cases, a good supervisor will always try their best to help the student continue with their studies. In the former case, this may mean considering alternative research questions or, in the latter case, encouraging you to seek academic support from the university through one of their student care policies.

Besides the student deciding to end their programme early, the university can also make this decision. On these occasions, the student’s supervisor may not believe they’ve made enough progress for the time they’ve been on the project. If the problem can’t be corrected, the supervisor may ask the university to remove the student from the programme.

Failing The Viva

Assuming you make it to the end of your programme, there are still two ways you can be unsuccessful.

The first is an unsatisfactory thesis. For whatever reason, your thesis may be deemed not good enough, lacking originality, reliable data, conclusive findings, or be of poor overall quality. In such cases, your examiners may request an extensive rework of your thesis before agreeing to perform your viva examination. Although this will rarely be the case, it is possible that you may exceed the permissible length of programme registration and if you don’t have valid grounds for an extension, you may not have enough time to be able to sit your viva.

The more common scenario, while still being uncommon itself, is that you sit and fail your viva examination. The examiners may decide that your research project is severely flawed, to the point where it can’t possibly be remedied even with major revisions. This could happen for reasons such as basing your study on an incorrect fundamental assumption; this should not happen however if there is a proper supervisory support system in place.

PhD Failure Rate – UK & EU Statistics

According to 2010-11 data published by the Higher Education Funding Council for England (now replaced by UK Research and Innovation ), 72.9% of students enrolled in a PhD programme in the UK or EU complete their degree within seven years. Following this, 80.5% of PhD students complete their degree within 25 years.

This means that four out of every five students who register onto a PhD programme successfully complete their doctorate.

While a failure rate of one in five students may seem a little high, most of these are those who exit their programme early as opposed to those who fail at the viva stage.

Failing Doesn’t Happen Often

Although a PhD is an independent project, you will be appointed a supervisor to support you. Each university will have its own system for how your supervisor is to support you , but regardless of this, they will all require regular communication between the two of you. This could be in the form of annual reviews, quarterly interim reviews or regular meetings. The majority of students also have a secondary academic supervisor (and in some cases a thesis committee of supervisors); the role of these can vary from having a hands-on role in regular supervision, to being another useful person to bounce ideas off of.

These frequent check-ins are designed to help you stay on track with your project. For example, if any issues are identified, you and your supervisor can discuss how to rectify them in order to refocus your research. This reduces the likelihood of a problem going undetected for several years, only for it to be unearthed after it’s too late to address.

In addition, the thesis you submit to your examiners will likely be your third or fourth iteration, with your supervisor having critiqued each earlier version. As a result, your thesis will typically only be submitted to the examiners after your supervisor approves it; many UK universities require a formal, signed document to be submitted by the primary academic supervisor at the same time as the student submits the thesis, confirming that he or she has approved the submission.

Failed Viva – Outcomes of 26,076 Students

Despite what you may have heard, the failing PhD rate amongst students who sit their viva is low.

This, combined with ongoing guidance from your supervisor, is because vivas don’t have a strict pass/fail outcome. You can find a detailed breakdown of all viva outcomes in our viva guide, but to summarise – the most common outcome will be for you to revise your thesis in accordance with the comments from your examiners and resubmit it.

This means that as long as the review of your thesis and your viva examination uncovers no significant issues, you’re almost certain to be awarded a provisional pass on the basis you make the necessary corrections to your thesis.

To give you an indication of the viva failure rate, we’ve analysed the outcomes of 26,076 PhD candidates from 14 UK universities who sat a viva between 2006 and 2017.

The analysis shows that of the 26,076 students who sat their viva, 25,063 succeeded; this is just over 96% of the total students as shown in the chart below.

how long are phd vivas

Students Who Passed

Failed PhD_Breakdown of the extent of thesis amendments required for students who passed their viva

The analysis shows that of the 96% of students who passed, approximately 5% required no amendments, 79% required minor amendments and the remaining 16% required major revisions. This supports our earlier discussion on how the most common outcome of a viva is a ‘pass with minor amendments’.

Students Who Failed

Failed PhD_Percentage of students who failed their viva and were awarded an MPhil vs not awarded a degree

Of the 4% of unsuccessful students, approximately 97% were awarded an MPhil (Master of Philosophy), and 3% weren’t awarded a degree.

Note : It should be noted that while the data provides the student’s overall outcome, i.e. whether they passed or failed, they didn’t all provide the students specific outcome, i.e. whether they had to make amendments, or with a failure, whether they were awarded an MPhil. Therefore, while the breakdowns represent the current known data, the exact breakdown may differ.

Summary of Findings

By using our data in combination with the earlier statistic provided by HEFCE, we can gain an overall picture of the PhD journey as summarised in the image below.

DiscoverPhDs_Breakdown of all possible outcomes for PhD candidates based on analysis of 26,076 candidates at 14 universities between 2006 and 2017

To summarise, based on the analysis of 26,076 PhD candidates at 14 universities between 2006 and 2017, the PhD pass rate in the UK is 80.5%. Of the 19.5% of students who fail, 3.3% is attributed to students failing their viva and the remaining 16.2% is attributed to students leaving their programme early.

The above statistics indicate that while 1 in every 5 students fail their PhD, the failure rate for the viva process itself is low. Specifically, only 4% of all students who sit their viva fail; in other words, 96% of the students pass it.

What Are Your Options After an Unsuccessful PhD?

Appeal your outcome.

If you believe you had a valid case, you can try to appeal against your outcome . The appeal process will be different for each university, so ensure you consult the guidelines published by your university before taking any action.

While making an appeal may be an option, it should only be considered if you genuinely believe you have a legitimate case. Most examiners have a lot of experience in assessing PhD candidates and follow strict guidelines when making their decisions. Therefore, your claim for appeal will need to be strong if it is to stand up in front of committee members in the adjudication process.

Downgrade to MPhil

If you are unsuccessful in being awarded a PhD, an MPhil may be awarded instead. For this to happen, your work would need to be considered worthy of an MPhil, as although it is a Master’s degree, it is still an advanced postgraduate research degree.

Unfortunately, there’s a lot of stigma around MPhil degrees, with many worrying that it will be seen as a sign of a failed PhD. While not as advanced as a PhD, an MPhil is still an advanced research degree, and being awarded one shows that you’ve successfully carried out an independent research project which is an undertaking to be admired.

Finding a PhD has never been this easy – search for a PhD by keyword, location or academic area of interest.

Additional Resources

Hopefully now knowing the overall picture your mind will feel slightly more at ease. Regardless, there are several good practices you can adopt to ensure you’re always in the best possible position. The key of these includes developing a good working relationship with your supervisor, working to a project schedule, having your thesis checked by several other academics aside from your supervisor, and thoroughly preparing for your viva examination.

We’ve developed a number of resources which should help you in the above:

  • What to Expect from Your Supervisor – Find out what to look for in a Supervisor, how they will typically support you, and how often you should meet with them.
  • How to Write a Research Proposal – Find an outline of how you can go about putting a project plan together.
  • What is a PhD Viva? – Learn exactly what a viva is, their purpose and what you can expect on the day. We’ve also provided a full breakdown of all the possible outcomes of a viva and tips to help you prepare for your own.

Data for Statistics

  • Cardiff University – 2006/07 to 2016/17
  • Imperial College London – 2006/07 to 2016/17
  • London School of Economics (LSE) – 2006/07 to 2015/16
  • Queen Mary University of London – 2009/10 to 2015/16
  • University College London (UCL) – 2006/07 to 2016/17
  • University of Aberdeen – 2006/07 to 2016/17
  • University of Birmingham – 2006/07 to 2015/16
  • University of Bristol – 2006/07 to 2016/17
  • University of Edinburgh – 2006/07 to 2016/17
  • University of Nottingham – 2006/07 to 2015/16
  • University of Oxford – 2007/08 to 2016/17
  • University of York – 2009/10 to 2016/17
  • University of Manchester – 2008/09 to 2017/18
  • University of Sheffield – 2006/07 to 2016/17

Note : The data used for this analysis was obtained from the above universities under the Freedom of Information Act. As per the Act, the information was provided in such a way that no specific individual can be identified from the data.

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  6. The Complete Guide to PhD Vivas

    how long are phd vivas

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  5. Day in the Life

  6. How to Survive a PhD VIVA

COMMENTS

  1. PhD Viva Voces

    A viva voce, more commonly referred to as 'viva', is an oral examination conducted at the end of your PhD and is essentially the final hurdle on the path to a doctorate. It is the period in which a student's knowledge and work are evaluated by independent examiners. In order to assess the student and their work around their research ...

  2. What is the PhD Viva?

    The viva voce is the final assessment for a PhD. It is an oral examination where the student defends their research to two academic examiners. This involves answering questions about your work, typically related to the literature, methodology, your findings and the significance of your conclusions. In some countries (like the USA) the viva is ...

  3. How to Defend a Thesis: An Introduction to the PhD Viva

    Steps to Completing a PhD. Submit your thesis for the examiners to read ahead of the viva. Celebrate! Have the viva, where you'll defend a thesis and discuss your research. The examiners will decide from a list of possible outcomes as detailed later in this post. Celebrate!

  4. What is a viva? PhD viva, viva voce, viva process and more

    A PhD viva or viva voce is an oral examination where you defend your thesis in front of internal examiner (s) from your institution and/or external examiner (s) from another institution specializing in your subject area. There may be up to 5 people on your viva panel. They are testing your knowledge and thought processed to be admitted into the ...

  5. What is a PhD Viva Like? Sharing Graduates' Experiences

    How long did my PhD viva last? All in all it was about five and a half hours. This was much longer than I anticipated. When we scheduled the viva to start at 10am I naively expected us to be finished by lunch. Admittedly the examiners did suggest stopping for a break at lunch time but again I naively thought we'd be done shortly afterwards ...

  6. Five top tips to pass your PhD viva

    1). Make your own learning space. "It's important on the lead up to the viva voce to have a space that's designated for your preparations. This could be at your university, in a coffee shop or at home. "For instance, I took over my dining room table for a good two months. I had all of my resources there - my books, my thesis and lots of post-it ...

  7. 5 tips for passing your PhD viva

    5. Plan towards the viva exam. From the moment you know the date of your viva voce, work backwards and plan the steps you'll need to take before the day itself. Allow enough time to assess and review your work so that as the day approaches, you can focus on the practicalities.

  8. PDF PhD Viva Guide

    WELCOME PURPOSE OF THE VIVA 1 The viva voce, which translates from Latin as living voice (Rugg and Petre, 2004), represents the culmination of the doctoral experience. The viva, also referred to as the oral defence or the oral examination, is a long-standing

  9. PDF A Guide for Viva Preparation

    The viva voce, shortened to viva, is an oral examination where you are expected to 'defend' your thesis, and the quality of your research will be assessed. The viva will take place usually within 3 months of submitting your thesis; it is a required examination in order to achieve a postgraduate research degree.

  10. What is a PhD Viva?

    A PhD viva also referred to as a Viva Voce, Latin for 'living voice', is an oral examination which follows the submission of your doctoral thesis, where you will showcase your knowledge and defend your research in front of a panel comprised of academic experts. This examination is compulsory for the vast majority of doctoral students.

  11. What is the #1 milestone to a successful academic career? What is a PhD

    For example, my viva took around 2 hours, but I know of instances when the viva took 6-8 hours. From my experience, the average duration takes around 3.5 hours. How long was yours? Who will form your PhD viva panel? As a rule of thumb, your PhD viva panel will comprise at least one internal examiner and one external examiner.

  12. 18 tips to pass your Viva presentation

    How long is the PhD Viva Voce Presentation with example. Many Ph.D. candidates are concerned by the duration that a viva voce takes and we would like to point out that it all depends on how prepared one is for the same. Traditionally, a viva voce is supposed to take ninety minutes with no hassles. However, it boils down to the examiners ...

  13. A guide to answering PhD viva questions (with examples)

    The PhD viva is an oral examination conducted by a panel that takes place as part of the PhD defence. The panel asks a PhD student questions about their research project and thesis, which requires the candidate to demonstrate knowledge in the subject area and understanding of how it applies to their project's topic.

  14. Vivas

    HOW long is a viva? There is no formal time limit. A viva can last between 1 and 2 hours but can sometimes event take 3 hours. ... Once you have passed your PhD viva, you cannot officially use the title 'Dr' until you receive official documentation from your university stating that you are a 'Doctor'.

  15. Preparing for a PhD Viva

    The viva voce gathering is conducted to fulfill the requirement of the award of PhD. We can consider it as a final stage or kind of examination of a PhD student . So obviously you have to prepare well. The viva is of two different kinds in context to PhD, open viva session and close viva session.

  16. PhD Viva: What it is and How to Prepare

    The official name for a PhD Viva is Viva Voce, which is Latin for living voice. It is an oral examination, comprising 20% towards the evaluation of a doctoral degree. The other 80% of the doctoral degree is allocated to the research work. Both are compulsory components of any Doctor of Philosophy (PhD) programme.

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  18. Finishing Your Doctorate

    Step 1: Decide how to submit your thesis. A doctoral thesis submitted for the award of MPhil, PhD, DBA, DPRP or DHealth may be submitted in one of two differing formats: a traditional thesis consisting of chapters. an alternative format thesis which integrates academic papers into the text.

  19. Top 12 Potential PhD Viva Questions and How to Answer Them

    Examiners are interested in knowing your understanding of the research, its methods, analysis and findings, conclusion and implications, etc. Despite the differences in every PhD viva, you must be prepared to answer these common questions logically. Below are some popular PhD viva questions to prepare: 1. Tell me about yourself.

  20. how long will my viva be?

    Despite its myriad manifestations, the PhD viva voce (live voice), as oral examination of the doctoral thesis, constitutes the final 'test' of the PhD endeavour. In the UK, this is a private event, though in some countries such as Belgium and the Netherlands, for example, the viva is conducted in a public arena (Delamont et al. 2004).

  21. I had a brutal PhD viva followed by two years of corrections

    In my viva, the personal investment that had driven me forward for so long train-wrecked into a wall of indifference. I am an extreme case, but I expect other PhD veterans will recognise some ...

  22. Shortest & Longest PhD Vivas on PostgraduateForum.com

    In our institute the norm is 3 to 4 hours. I will have my viva in less than a week and officially booked for 4 hours but it can last longer. The longest I saw lasted 6 hours + lunch break. But vivas of 5 hours are not so uncommon here. The length is not related with the quality of the thesis and the outcome of the viva.

  23. PhD Failure Rate

    The PhD failure rate in the UK is 19.5%, with 16.2% of students leaving their PhD programme early, and 3.3% of students failing their viva. 80.5% of all students who enrol onto a PhD programme successfully complete it and are awarded a doctorate. Introduction. One of the biggest concerns for doctoral students is the ongoing fear of failing ...