How to Rehearse for a Viva Out Loud (The Six-Week Cycle)

Why silent rehearsal does not build composure

How to rehearse for a viva is a question every candidate asks and most answer with silent reading of the thesis. Silent rehearsal covers the material but does not build the specific composure the room tests. The viva is an oral exam. The composure that carries you through is composure at speaking, not composure at reading.

Wisker (2012) recommends rehearsing out loud, because the working of an answer under time pressure is what the panel is watching for. Silent rehearsal skips exactly that.

The six-week rehearsal cycle

A workable rehearsal schedule runs six weekly sessions before the viva, each 45 to 90 minutes.

Week 6: mapping session. Print your thesis. Read it end to end with a pen. Mark passages where the argument shifts, where a claim rests on something you cannot recall, or where a chapter ends without connecting to the next. Build 20 to 30 anchored questions from those passages.

Week 5: first anchored practice. Answer the first 10 questions aloud. Record each answer. Play back the same day and mark where you drifted, hedged, or reached for filler.

Week 4: second anchored practice with follow-up. Answer the next 10 questions aloud. For five of them, add why-asker chains: after your first answer, ask "why?" out loud, answer that, ask "why?" again. See where the reasoning holds and where it runs out.

Week 3: one-minute contribution rehearsal. Rehearse the one-minute contribution answer until you can deliver it from memory in the exact words. This is the opening most vivas run on.

Week 2: full-length rehearsal. One session at full expected viva length (90 minutes for UK, 120 minutes for US). Record. Play back. Mark the weakest three exchanges.

Week 1: targeted rehearsal on weak spots. Rehearse only the three weakest exchanges from week 2, until they land. Rest.

Record and play back, every session

The single most useful technique is recording your answers and playing them back the same day. Vitae and Edinburgh IAD both recommend this specifically. There is no formal published efficacy study, but the mechanism is clear: hearing yourself under exam conditions exposes weaknesses that silent rehearsal smooths over.

The playback catches:

• Filler words ("um," "sort of," "kind of," "basically") you did not know you used
• Pace that ran too fast or slowed to a crawl
• Sentences that started confidently and trailed into hedges
• Points where you reached for a word that did not come
• Answers that ran two minutes when the substance was 45 seconds

Candidates who record and never play back stay in the writer's-eye view. Candidates who play back move into the examiner's-eye view.

The why-asker chain

The second most useful technique is the why-asker chain. After you answer a question aloud, ask "why?" out loud. Answer that. Ask "why?" again. Continue until either the answer holds or you notice where the reasoning needs work.

Real examiners do this. The first question sounds gentle. The follow-up presses harder. The third or fourth follow-up is where the argument either holds or collapses (Rugg & Petre, 2004).

Solo, you can push the chain further than a live rehearsal would, because there is no reader to interrupt. Take a load-bearing answer and push until you either reach a defensible foundation or discover the point at which more preparation is needed.

Anchored questions, not generic ones

Rehearsing against generic viva questions ("what is your original contribution?") does less than rehearsing against anchored questions ("on page 47, you claim these two frameworks are compatible; say more"). Generic questions produce generic answers. Anchored questions force the specific reading the real panel does.

Trafford and Leshem (2008), across 25 doctoral vivas, found that panels return repeatedly to specific pages. Rehearsing against anchored questions matches this pattern.

What to record on and how

A phone is enough. Any voice-memo app records what you need. Save each session with the date and week number. Play back with headphones so you can hear the specific hesitations and filler.

Do not record video unless you have a specific reason. Audio catches the delivery patterns that matter; video can add a self-consciousness that does not help.

Where solo practice hits its ceiling

Solo rehearsal covers the material and builds the answer patterns. It does one thing poorly: it does not create the pressure of an unfamiliar reader who has spent hours with your thesis and will not accept a rehearsed line.

That ceiling matters. If you can arrange a mock viva with a colleague, a second supervisor, or a peer in your field, do. If you cannot, the specific gap is filled by Thesisroom's defense practice, which reads your thesis and generates examiner-grade questions anchored to specific passages. The questions come from your own text, which is the property that matters most.

What Thesisroom does with this

Thesisroom's defense practice generates anchored questions from your thesis for out-loud rehearsal. Answers can be typed or spoken. The full method treats rehearsal as a whole-degree seat, so chapter-level rehearsal runs during the writing months and full-thesis rehearsal runs in the final weeks.

The tool does not replace a live reader-examiner rehearsal where you can arrange one. It fills the specific gap when you cannot, with questions drawn from your own text.

Frequently asked questions

How many hours of rehearsal do I need?

Six to eight sessions of 45 to 90 minutes each, spread across the final six weeks, cover most of what solo rehearsal can build. That is 5 to 12 hours total. Rehearsing longer at the same intensity produces diminishing returns; shorter and more frequent runs work better than fewer marathon sessions.

Do I really need to record myself?

Yes. Playback is where silent-rehearsal blind spots surface. Filler words, pace drift, unclear reasoning, over-long answers. Candidates who record and never play back stay in the writer's-eye view. The playback is the shift into the examiner's-eye view.

What if I do not have a mock viva rehearser?

Solo rehearsal covers most of the ground. If you can arrange a live mock with a colleague, second supervisor, or peer, do. If you cannot, anchored self-questioning against your own thesis is the closest solo equivalent. Thesisroom's Defense Practice generates the anchored questions from your text.

How soon before the viva should I stop rehearsing?

Do a full-length rehearsal in week 2, targeted rehearsal on weak spots in week 1, then rest the day before. Late-night rehearsal on the day before rarely produces useful new knowledge and often undermines sleep. Composure carries through the room better than last-minute new content.

Can I rehearse with my supervisor?

Yes, and it helps when the supervisor has time to press specifically on the chapters most likely to be tested. Some supervisors run mock vivas as part of the final preparation; some do not. Ask directly what your supervisor is willing to do.

How does Thesisroom fit rehearsal?

Defense Practice generates examiner-grade questions anchored to specific passages of your thesis, so the questions match what a real panel would ask. Answers can be typed or spoken. Rehearsing aloud against your own text is the specific practice out-loud rehearsal is meant to build.

One takeaway before you close this tab

Rehearsing for a viva out loud, across six weekly sessions, with anchored questions from your own text, recorded and played back, builds the composure the room tests. When you want the anchored questions generated from your thesis, Thesisroom's defense practice runs the rehearsal against your text.

References

Rugg, G., & Petre, M. (2004). The Unwritten Rules of PhD Research. Open University Press.

Trafford, V., & Leshem, S. (2008). Stepping Stones to Achieving your Doctorate. Open University Press.

Wisker, G. (2012). The Good Supervisor (2nd ed.). Palgrave Macmillan.