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| Criterion |  UX Research Diary Study |  UX Research Contextual Inquiry |  Product Discovery Fake Door Test |  Product Discovery MVP Test Matrix |
|---|---|---|---|---|
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 work processes are known only from accounts and the real context stays hidden, Contextual Inquiry makes behavior at the workplace visible. Observation and follow-up questions together show how people actually work, get interrupted, and improvise. | 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. | When several minimal variants compete to answer the same question, it makes comparing and choosing between them cleaner. It separates problem, assumption, solution, and evidence. The result is captured as a Test Matrix and a Test Plan. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | 1-4 Wochen | 1-3 Wochen | 1-5 Tage | 45-75 min |
Participantsdifferent | 5-20 | 4-12 Beobachtungen | Nutzertraffic | 2-8 |
Formatdifferent | Async | Workshop + async | Async | Workshop |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Field Notes, Workflow Insights, Pain Points | Click Data, Interest Signal, Learning Decision | Test Matrix, Test Plan |
Tagsno overlap | UX researchTrackingBehavior | UX researchObservationContext | ValidationExperimentsDemandDiscovery | ExperimentsValidationDiscoveryOptions |