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| Criterion |  UX Research Diary Study |  UX Research Usability Testing |  Innovation Design Sprint |  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 a product is built but people get stuck on tasks, usability testing shows the friction at concrete points. Observed use instead of self-report makes visible where orientation, understanding, or interaction breaks down. | When the product question is unclear and time pressure is high, the method takes a team from an open idea to a testable solution. It connects problem understanding, decision, and learning in one compact format, lowering the risk of spending a lot of energy on a mere guess. | 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 | High | High |
Timedifferent | 1-4 Wochen | 1-2 h je Session | 4-5 Tage | 2-10 Tage |
Participantsdifferent | 5-20 | Based on research question | 5-8 | 5-20 Nutzer |
Formatdifferent | Async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Usability Issues, Severity List, Recommendations | Prototype, Test Findings, Decision Rationale | Prototype Learnings, Manual Effort Notes, Risk List |
Tagsno overlap | UX researchTrackingBehavior | ValidationUXPrototype | Design sprintPrototypeValidationInnovation | PrototypeValidationMVP |