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| Criterion |  UX Research Diary Study |  Product Discovery Opportunity Interview |  UX Research User Interviews |  UX Research Personas |
|---|---|---|---|---|
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 opportunities are still hidden behind signals of need, it structures conversations around needs and obstacles. It looks for patterns that lead to new product opportunities. | 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 target groups stay too vague and teams talk about the same people differently, personas create a shared, solid picture of usage. Condensed profiles make needs, contexts, and differences tangible enough for decisions. |
Complexitydifferent | Medium | Medium | Low | Medium |
Timedifferent | 1-4 Wochen | 30-60 min je Interview | 30–60 min per interview | 1-3 Tage |
Participantsdifferent | 5-20 | 5-12 Interviews | 1 participant per interview | Internes Team |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Interview Notes, Opportunity Themes, Customer Quotes | Interview Notes, Themes, Insight Summary | Persona Profiles, Needs Summary, Scenario Notes |
Tagsno overlap | UX researchTrackingBehavior | DiscoveryInterviewsOpportunityCustomer | QualitativeResearchCustomerDiscovery | ResearchCustomerSynthesis |