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| Criterion |  UX Research Card Sorting |  UX Research Usability Testing |  UX Research Tree Testing |  Product Discovery Solution Interview |
|---|---|---|---|---|
Purposedifferent | 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. | 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 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 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. |
Complexitydifferent | Low | Medium | Medium | Medium |
Timedifferent | 20-45 min | 1-2 h je Session | 1-2 Tage | 30-60 min je Interview |
Participantsdifferent | Based on research question | Based on research question | Based on research question | 5-10 Interviews |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop + async |
Outputdifferent | Content groups, Label set, IA hypotheses | Usability Issues, Severity List, Recommendations | Findability Metrics, Path Analysis, Revised IA | Solution Feedback, Objection List, Validation Notes |
Tagsno overlap | Information architectureNavigationStructure | ValidationUXPrototype | Information architectureNavigationFindability | ValidationInterviewsPrototype |