The user interview guide
A discovery guide built on what people actually did, not what they say they'd do next.
Before any round of user interviews, especially the first one on a new problem.
- 1
Screener
Makes sure you're talking to someone who has the actual behaviour you're studying, not someone willing to imagine having it.
What it asksWhat did this person actually do, recently, that qualifies them, not what they say they would do?
Filled inScreen for: linked a bank account in Sona within the last 30 days, and set at least one budget category. Not: "would you be interested in budgeting features," which qualifies anyone who says yes to a hypothetical.
How it goes wrongScreening on stated interest ("are you someone who cares about budgeting") instead of actual behaviour. Everyone says yes to caring about budgeting. Far fewer have ever set one.
- 2
Opening: the last time it happened
Anchors the whole interview in a specific, recent, real event instead of a general opinion.
What it asksWhat's the most recent specific instance of the behaviour you want to understand? Ask them to walk through it.
Filled inTell me about the last time you set a budget in Sona. Not this week in general, the actual last time. Where were you, what made you open the app right then?
How it goes wrongAsking "how do you usually budget" instead of "tell me about the last time." "Usually" invites a generalised, tidied up answer. "Last time" forces a specific memory with the mess still in it.
- 3
Follow the friction, not the feature
Keeps the conversation on what actually went wrong or felt hard, rather than drifting into a feature request session.
What it asksAt each step they describe, ask what almost made them stop, or what they weren't sure about.
Filled inYou said you weren't sure which category to pick for that purchase. What did you do? Did you guess, skip it, or go looking for help? What would have told you the answer faster?
How it goes wrongLetting the conversation drift to "what feature would you want," which produces a wishlist built from whatever they can imagine, usually a worse version of something they've seen elsewhere, instead of the actual friction in their real workflow.
- 4
Never ask about the future
Removes the invitation to speculate. People are unreliable narrators of their own future behaviour and reliable narrators of what they already did.
What it asksReframe any "would you use X" question as a question about what they've done in the past that's closest to X.
Filled inInstead of "would you use an automatic savings feature," ask: "have you ever set up an automatic transfer anywhere, in any app or bank, and if so, why that one, and what stopped you doing it in others."
How it goes wrongAsking "would you pay for this" or "would you use this" directly. People are polite and imaginative. They'll say yes to be helpful, and that yes predicts nothing about what they'll actually do.
- 5
Close: what happened right after
Captures the immediate consequence of the behaviour, which is often more revealing than the behaviour itself.
What it asksWhat did they do in the minutes or days right after? Did they come back, tell someone, give up?
Filled inAfter you set that budget, what happened next? Did you check it again? When? What made you check, or what made you forget about it?
How it goes wrongEnding the interview at the moment of the action instead of following through to the consequence, which is where you learn whether the feature actually changed behaviour or just produced a one time action that was immediately forgotten.
Take the whole thing
# User interview guide: [research question] ## Screener Qualifying behaviour in the last 30 days (not stated interest): ## Opening Tell me about the last time [behaviour happened]. Walk me through it. ## Friction, step by step At each step: what almost made you stop? What weren't you sure about? 1. 2. 3. ## Past behaviour, not future intent Instead of "would you use X," ask what they've done closest to X already. ## Close What happened right after? Did you come back, tell someone, give up? Duration booked: 45 min. Plan to use: 30 min.
The PRD that survives contact with engineering
One page. Four sections engineers actually read before they start arguing about scope.
The signal log
One row per quote. A structured way to hold raw feedback without losing the exact words.
The opportunity tree, on one page
Outcome, opportunity, solution, experiment. The map from what you're chasing down to what you're testing this week.