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| Criterion |  UX Research Diary Study |  UX Research Usability Testing |  Product Discovery Test Card |  Product Discovery Learning 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 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. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 1-4 Wochen | 1-2 h je Session | 20-35 min | 25-40 min |
Participantsdifferent | 5-20 | Based on research question | 1-5 | 1-5 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Usability Issues, Severity List, Recommendations | Test Card with a pre-set threshold | Learning Card with evidence and next action |
Tagsno overlap | UX researchTrackingBehavior | ValidationUXPrototype | ExperimentsValidationDiscoveryHypothesis | ExperimentsValidationDiscoveryLearning |