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| Criterion |  UX Research Diary Study |  UX Research Contextual Inquiry |  Product Discovery Solution Interview |  Product Discovery Wizard of Oz Test |
|---|---|---|---|---|
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 a solution idea is already on the table, it checks how it is understood and evaluated. It looks for resonance, objections, and missing fit early in the conversation. | When a new experience would still be too expensive to automate for real, it simulates the outcome behind the scenes. It checks user reaction and value before the technology disappears. |
Complexitydifferent | Medium | Medium | Medium | High |
Timedifferent | 1-4 Wochen | 1-3 Wochen | 30-60 min je Interview | 2-10 Tage |
Participantsdifferent | 5-20 | 4-12 Beobachtungen | 5-10 Interviews | 5-20 Nutzer |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Field Notes, Workflow Insights, Pain Points | Solution Feedback, Objection List, Validation Notes | Prototype Learnings, Manual Effort Notes, Risk List |
Tagsno overlap | UX researchTrackingBehavior | UX researchObservationContext | ValidationInterviewsPrototype | PrototypeValidationMVP |