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| Criterion |  UX Research User Interviews |  UX Research Tree Testing |  UX Research First-click Testing |  UX Research Card Sorting |
|---|---|---|---|---|
Purposedifferent | When teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | 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 users immediately turn the wrong way on a screen or wireframe, first click testing checks initial orientation at high speed. The first click shows early whether expectation, labeling, and wayfinding fit together. | 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 | Low | Medium | Low | Low |
Timedifferent | 30–60 min per interview | 1-2 Tage | 1-2 Tage | 20-45 min |
Participantsdifferent | 1 participant per interview | Based on research question | 10-30 | Based on research question |
Formatdifferent | Workshop + async | Async | Async | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Findability Metrics, Path Analysis, Revised IA | Click Heatmap, Success Rate, Design Recommendations | Content groups, Label set, IA hypotheses |
Tagsno overlap | QualitativeResearchCustomerDiscovery | Information architectureNavigationFindability | UXNavigationFindabilityValidation | Information architectureNavigationStructure |