Zehn Gewohnheiten, die PhD- und Master-Studierenden helfen, selbstbewusst, vorbereitet und bereit in ihre Viva voce zu gehen und über ihre Forschung zu sprechen.
Every year, thousands of PhD and Masters students sit their viva voce examination. Some walk in nervous but ready. Others walk in nervous and underprepared. The difference almost never comes down to how good their thesis is – it comes down to how they prepared for the conversation about it.
After years of working with doctoral candidates at Oxford and beyond, I've noticed a clear pattern. The students who come out of their viva feeling good about it – regardless of the outcome – tend to do the same things in the weeks and months beforehand. None of these things are complicated. None of them require brilliance. They just require intention.
Here are ten habits that separate the best-prepared viva candidates from the rest. (If you're looking for a comprehensive overview, start with our guide on [how to prepare for your viva](/blog/how-to-prepare-for-your-viva-a-comprehensive-guide).)
This sounds obvious, but most candidates don't actually do it. They skim. They skip chapters they remember writing. They assume they know what's in there because they spent three years putting it there.
The best-prepared candidates sit down and read their thesis from beginning to end as though they're encountering it for the first time. They read it with fresh eyes, looking for the thread that connects the introduction to the conclusion. They note the places where the argument is strong and the places where it leans on assumptions they never fully unpacked.
This matters because your examiners are reading it for the first time. They don't have the context you have. They don't know which chapter gave you trouble or which section you rewrote four times. They're reading a document, and they're going to ask you about what's on the page – not what's in your head. When you re-read like a reader, you start to see your thesis the way they will, and that makes the conversation far more predictable.
Ask a nervous candidate what their thesis contributes and you'll often get a long, winding answer full of caveats and qualifications. Ask a well-prepared candidate the same question and you'll get two or three clear sentences.
This isn't about dumbing anything down. It's about clarity. Your examiners want to know that you understand what you've done and why it matters. They want to hear you say it with conviction. The candidates who practise articulating their contribution in plain, confident language – without jargon, without hedging – tend to make a strong first impression that carries through the entire viva.
A useful exercise: explain your contribution to someone outside your field. If they can follow it, you're ready. If they can't, keep refining.
Methodology is the section examiners almost always probe. Not because they think you got it wrong, but because they want to understand the choices you made. Why this approach and not another? What were the trade-offs? What would you do differently with hindsight?
The best-prepared candidates don't just know what they did – they know why they did it, what the alternatives were, and how their choices shaped the results. They can talk about the limitations of their method without sounding defensive, because they've already thought it through.
If there's one section of your thesis to know cold, it's methodology. Not because it's the most likely source of criticism, but because confident, thoughtful answers about methodology signal to examiners that you understand your research at a deep level.
There's a difference between anticipating questions and catastrophising about them. The best-prepared candidates sit down with their thesis and think: if I were examining this, what would I ask? They look for the gaps, the tensions, the places where a curious reader would want to know more. And then they prepare thoughtful responses.
They don't try to memorise scripted answers. They think through the territory so that when a question comes, they've already visited the neighbourhood. The goal isn't to predict the exact questions – it's to reduce the number of times you're caught completely off guard.
A good starting point: write down ten questions you'd least like to be asked, then spend time thinking about how you'd respond to each one. You'll find that most of them aren't as threatening as they seem once you've sat with them for a while.
Reading your thesis is one thing. Talking about it is another. The viva is a spoken examination, and the best-prepared candidates treat it as one. They practise answering questions out loud – not in their head, not in writing, but actually speaking.
This matters more than most people realise. When you practise out loud, you discover which ideas you can articulate fluently and which ones you stumble over. You find out where your explanations are too long, where they're too vague, and where you tend to lose the thread. You also get more comfortable with the sound of your own voice making academic arguments, which is its own kind of preparation.
Some candidates practise with a supervisor, some with a friend, some with a mirror. The format matters less than the act of doing it. The candidates who walk into their viva having never spoken their answers out loud are at a real disadvantage compared to those who have.
Most vivas begin with some version of the same question: can you summarise your thesis? Or: what made you choose this topic? Or: talk us through your main argument.
The best-prepared candidates have a clear, confident opening ready. Not a rehearsed monologue – a natural, well-structured response that lasts two to three minutes and sets the tone for the rest of the conversation. They know how they want to start, and that confidence carries them through the initial nerves.
This is one of the few moments in the viva where you have full control over what you say. The examiners are listening, they're forming their first impression, and you have the floor. It's worth preparing for that moment specifically, because starting well makes everything that follows easier.
A lot of viva anxiety comes from not understanding the examiner's role. Candidates sometimes imagine examiners as adversaries trying to catch them out, which makes the whole experience feel like a trial.
In reality, examiners are looking for evidence that you understand your own research, that you can defend your choices, and that you can engage in scholarly conversation about your work. They've read your thesis carefully. In most cases, they've already formed a positive view of it – otherwise you wouldn't be sitting the viva at all. They're not trying to trip you up. They're trying to have an informed conversation with the person who knows this research better than anyone else in the room.
The candidates who understand this tend to be calmer, more conversational, and more willing to engage with difficult questions rather than shutting down. Reframing the viva as a discussion rather than a defence changes how you show up. (For more on this, see [what examiners actually look for in a viva](/blog/what-examiners-actually-look-for-in-a-thesis-defense).)
One of the most impressive things a candidate can do in a viva is say "I don't know" or "I haven't considered that" without panicking. The best-prepared candidates know the boundaries of their knowledge and they're comfortable acknowledging them.
This works because examiners can tell when you're bluffing. A vague, rambling non-answer is far more damaging than a straightforward admission followed by thoughtful engagement: "That's not something I explored in this thesis, but my instinct is that it would connect to..." or "I hadn't considered that angle – it's an interesting question and I think it relates to..."
Preparation isn't about knowing everything. It's about being so familiar with your own work that you can clearly distinguish between what you know, what you've thought about but haven't resolved, and what lies beyond the scope of your project. That clarity is what examiners respect.
This one has nothing to do with academic preparation and everything to do with how you show up on the day. The best-prepared candidates treat the last few days before their viva like the last few days before an important performance. They sleep properly. They eat well. They don't cram new material at the last minute.
By the time you're a few days out from your viva, your preparation is essentially done. Trying to squeeze in more reading or more practice at that point usually increases anxiety rather than competence. The candidates who give themselves permission to rest, to go for a walk, to do something unrelated to their thesis – they tend to arrive at the viva sharper and calmer than those who worked right up to the last hour.
Your brain needs rest to perform well in a high-pressure conversation. Treat that as part of your preparation, not a break from it.
This is the thread that runs through everything else on this list. The candidates who prepare well tend to approach the viva as what it actually is: a conversation between scholars about a piece of research. Yes, there's a power dynamic. Yes, the outcome matters. But the format is a discussion, and the best way to prepare for a discussion is to become deeply, comfortably familiar with the subject – which, in this case, is your own work.
When you've re-read your thesis carefully, when you can articulate your contribution clearly, when you've practised speaking about your research and thought through the questions that might come up – the viva stops feeling like an exam and starts feeling like what it is. A chance to talk about the thing you've spent years working on, with people who've taken the time to read it properly.
That's not something to dread. That's something to walk into feeling prepared for.