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| Criterion |  UX Research Diary Study |  Product Discovery Problem Interview |  Decision Making Assumption Surfacing |
|---|---|---|---|
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 the picture of the problem still needs to become solid, it asks about real situations and consequences. It separates genuine suffering from mere interest in a solution. | 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. |
Complexitydifferent | Medium | Medium | Low |
Timedifferent | 1-4 Wochen | 30-60 min je Interview | 45-90 min |
Participantsdifferent | 5-20 | 5-12 Interviews | 2-8 |
Formatdifferent | Async | Workshop + async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Problem Evidence, Risk Notes, Customer Segments | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | UX researchTrackingBehavior | DiscoveryInterviewsValidation | AssumptionsRiskDecisionDiscovery |
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