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| Criterion |  UX Research Diary Study |  UX Research User Interviews |  Product Discovery Opportunity Solution Tree |
|---|---|---|---|
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 teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | 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. |
Complexitydifferent | Medium | Low | Medium |
Timedifferent | 1-4 Wochen | 30–60 min per interview | 1-2 h Setup, laufend |
Participantsdifferent | 5-20 | 1 participant per interview | 2-6 |
Formatdifferent | Async | Workshop + async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Interview Notes, Themes, Insight Summary | Opportunity Solution Tree, Experiment Backlog, Learning Log |
Tagsno overlap | UX researchTrackingBehavior | QualitativeResearchCustomerDiscovery | DiscoveryOutcomesExperimentsOpportunity |
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