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| Criterion |  UX Research Diary Study |  UX Research Tree Testing |  Product Discovery Problem Interview |  UX Research Card Sorting |
|---|---|---|---|---|
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 navigation exists but search paths still fail, tree testing checks findability without visual distraction. The method shows whether labels, levels, and paths really lead to the intended destination. | When the picture of the problem still needs to become solid, it asks about real situations and consequences. It separates genuine suffering from mere interest in a solution. | When content only makes sense internally and users can't find the structure again, card sorting exposes their mental order. Terms, groups, and naming are then aligned with the target group's expectations. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | 1-4 Wochen | 1-2 Tage | 30-60 min je Interview | 20-45 min |
Participantsdifferent | 5-20 | Based on research question | 5-12 Interviews | Based on research question |
Formatdifferent | Async | Async | Workshop + async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Findability Metrics, Path Analysis, Revised IA | Problem Evidence, Risk Notes, Customer Segments | Content groups, Label set, IA hypotheses |
Tagsno overlap | UX researchTrackingBehavior | Information architectureNavigationFindability | DiscoveryInterviewsValidation | Information architectureNavigationStructure |