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| Criterion |  Operations 5 Whys |  UX Research Tree Testing |
|---|---|---|
Purposedifferent | 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. | 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. |
Complexitydifferent | Low | Medium |
Timedifferent | 15-30 min | 1-2 Tage |
Participantsdifferent | 2-6 | Based on research question |
Formatdifferent | Workshop | Async |
Outputdifferent | Root cause notes, Countermeasures | Findability Metrics, Path Analysis, Revised IA |
Tagsno overlap | Root causeIncidentLeanProblem solving | Information architectureNavigationFindability |
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