How to prepare for a viva
Prepare for a viva by practising answering questions out loud, under pressure, about the work you will be examined on, then fixing the gaps each practice round exposes. Rereading your thesis or notes feels productive but does not train the skill a viva tests.
What most advice leaves out
A viva is not a memory test with a different format. Examiners are checking that you understand your material well enough to explain it, defend choices you made and reason about questions you did not expect. The thing that usually lets students down is not missing knowledge but answers that wander: they know the topic, start talking, and never land on a clear point. That only improves by answering questions and hearing, or reading back, what you actually said.
Step by step
- 1
Find out the format
Ask how long the viva lasts, who examines, and whether it covers a thesis, a project, a module or clinical knowledge. An undergraduate oral and a doctoral defence need very different preparation.
- 2
List the questions you hope they skip
Write down the five questions you would least like to be asked. Those are your weakest areas, and the ones to practise first, not last.
- 3
Answer out loud, in short structured answers
Practise a shape: a one-sentence answer, the reason or evidence, then one limitation or example. Stop when you have made the point. Examiners will ask a follow-up if they want more.
- 4
Practise follow-ups, not just first questions
Real examiners push: "why that method?", "what would you do differently?". After each answer, ask yourself the obvious next question and answer that too.
- 5
Review what you missed and repeat
After each round, note the points a strong answer would have included that yours did not. Re-study only those, then run another round on the same topics.
Common mistakes
- Rereading the whole thesis or every lecture the night before instead of practising answers.
- Memorising scripted answers word for word, which falls apart the moment the question is phrased differently.
- Treating "I don’t know" as failure. Saying what you do know and how you would find out is usually a better answer than bluffing.
Practise it with Migo AI Students
Viva Simulator plays the examiner. It asks a question from your study agent’s sources, you type your answer the way you would say it, and it gives rubric feedback on what you covered, the points you missed and the next examiner question. Build an agent from your own notes or thesis chapters so the questions come from your material, then use Chat Tutor to go back over anything the feedback flagged. Both modes are free.
Questions
How long should I spend preparing for a viva?
Long enough to do several full practice rounds on every major topic, with time between rounds to fix what each one exposed. Starting a week or two out is more useful than cramming the day before, because the improvement comes from repeating practice, not from one long session.
What if I go blank during the viva?
Pause, ask the examiner to repeat or rephrase the question, and start with the part you are sure of. Practising under question pressure beforehand makes blanks less likely, because answering on the spot becomes familiar.
Related guides
- Common viva questions and how to answer themMost vivas return to the same handful of question types: summarise your work, justify your choices, explain a key concept, deal with a limitation, and say what you would do next. Preparing a clear way to answer each type works better than memorising answers to specific questions.
- How to prepare for an oral examPrepare for an oral exam by turning your syllabus into questions, practising spoken answers to them out loud, and rehearsing until you can give a short, structured answer without notes. The skill being tested is explaining on the spot, so that is the thing to practise.
- What is active recall?Active recall is studying by retrieving information from memory, for example by answering questions with your notes closed, rather than by reading the information again. Each act of retrieval strengthens the memory and shows you what you have not learned yet.
General study advice. Follow your own course’s guidance and your institution’s rules on assessment and AI use.