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