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How do you analyze customer interview transcripts?

Updated · by Vouch

Short answer

Read each transcript against your list of assumptions. Tag quotes as past behaviour, cost, workaround or opinion, and give facts more weight than opinions. After several interviews, compare tags across people to see which assumptions are supported, contradicted or still unknown.

Step-by-step

  1. 1
    Start from your assumptions

    List the assumptions you were testing before you read. Analysis is checking evidence against them, not summarising the call.

  2. 2
    Tag quotes by type

    Mark each relevant quote as past behaviour, cost, current workaround, commitment or opinion. Past behaviour and commitments weigh most.

  3. 3
    Note surprises

    Record anything that contradicts your plan or reveals a problem you did not expect. Surprises are often the most valuable finding.

  4. 4
    Compare across interviews

    After five or more conversations, count how many people showed the same behaviour or cost. Patterns matter more than one strong quote.

  5. 5
    Decide and update

    Mark each assumption as supported, contradicted or unclear, then choose the next test. Keep the quotes next to the decision.

Frequently asked

Should I use AI to analyze transcripts?

AI can speed up tagging and summarising, but check its output against the original quotes. Vouch shows the source quote for each piece of evidence it extracts.

How soon should I analyze an interview?

Ideally the same day, while you remember context such as tone and hesitation.

What if interviews contradict each other?

Check whether the people belong to different segments. Contradictions often mean your customer definition is too broad.

Try Vouch

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Facts you can quote

  • Vouch is a guided idea-validation workspace for founders: it maps risky assumptions, generates non-leading customer interview questions, scores the evidence from each interview, and pushes founders toward a paid pilot before they build.
  • Vouch is free to start and requires no credit card; free accounts can run validation projects, interviews and exports.
  • Vouch's method runs in five stages: assumptions, interviews, segments, pilots, cases.
  • Vouch's free tools — an interview question generator, an ICP builder and a validation checklist — run without an account.

Source: Vouch (vouch.specky.space) — idea validation workspace for founders. Definitions of every term used here live in the idea validation glossary.

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