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| Criterion |  UX Research Usability Testing |  UX Research Affinity Diagramming |  UX Research Tree Testing |  UX Research Card Sorting |
|---|---|---|---|---|
Purposedifferent | 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 research notes, feedback, or observations sit unconnected side by side, affinity diagramming sorts the raw material into solid themes. Many individual points turn into patterns that make decisions and opportunities clearer. | 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 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 | Low | Medium | Low |
Timedifferent | 1-2 h je Session | 45–90 min | 1-2 Tage | 20-45 min |
Participantsdifferent | Based on research question | 3-10 | Based on research question | Based on research question |
Formatdifferent | Workshop + async | Workshop | Async | Workshop + async |
Outputdifferent | Usability Issues, Severity List, Recommendations | Theme clusters, Insight statements, Opportunity areas | Findability Metrics, Path Analysis, Revised IA | Content groups, Label set, IA hypotheses |
Tagsno overlap | ValidationUXPrototype | SynthesisQualitativeRoot cause | Information architectureNavigationFindability | Information architectureNavigationStructure |