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| Criterion |  UX Research Diary Study |  Product Discovery Fake Door Test |  Decision Making Assumption Surfacing |  Product Discovery Learning Card |
|---|---|---|---|---|
Purposedifferent | When experiences build up over days or weeks and a single session cannot capture them, Diary Study records the course of everyday life. Recurring triggers, moods, and habits become visible this way, beyond the sharpness of memory. | When demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 1-4 Wochen | 1-5 Tage | 45-90 min | 25-40 min |
Participantsdifferent | 5-20 | Nutzertraffic | 2-8 | 1-5 |
Formatdifferent | Async | Async | Workshop + async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Click Data, Interest Signal, Learning Decision | Assumption List, Critical Assumptions, Learning Plan | Learning Card with evidence and next action |
Tagsno overlap | UX researchTrackingBehavior | ValidationExperimentsDemandDiscovery | AssumptionsRiskDecisionDiscovery | ExperimentsValidationDiscoveryLearning |