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| Criterion |  UX Research Diary Study |  Product Discovery Opportunity Solution Tree |  Product Discovery Test 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 discovery keeps swinging between goals, ideas, and learning loops, it creates clear steering logic. It connects the desired outcome, opportunities, and experiments into a legible structure. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | Medium | Medium | Low |
Timedifferent | 1-4 Wochen | 1-2 h Setup, laufend | 20-35 min |
Participantsdifferent | 5-20 | 2-6 | 1-5 |
Formatdifferent | Async | Workshop + async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Opportunity Solution Tree, Experiment Backlog, Learning Log | Test Card with a pre-set threshold |
Tagsno overlap | UX researchTrackingBehavior | DiscoveryOutcomesExperimentsOpportunity | ExperimentsValidationDiscoveryHypothesis |
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