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| Criterion |  UX Research Tree Testing |  UX Research First-click Testing |  Operations 5 Whys |
|---|---|---|---|
Purposedifferent | 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. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Medium | Low | Low |
Timedifferent | 1-2 Tage | 1-2 Tage | 15-30 min |
Participantsdifferent | Based on research question | 10-30 | 2-6 |
Formatdifferent | Async | Async | Workshop |
Outputdifferent | Findability Metrics, Path Analysis, Revised IA | Click Heatmap, Success Rate, Design Recommendations | Root cause notes, Countermeasures |
Tagsno overlap | Information architectureNavigationFindability | UXNavigationFindabilityValidation | Root causeIncidentLeanProblem solving |
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