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| Criterion |  UX Research Tree Testing |  Operations PDCA Cycle |  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. | For an improvement that still has to prove itself in everyday work, the method runs it through small learning loops. It connects planning, checking, and standardization into a repeatable learning mode. | 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 h bis mehrere Wochen | 15-30 min |
Participantsdifferent | Based on research question | 1-8 | 2-6 |
Formatdifferent | Async | Workshop + async | Workshop |
Outputdifferent | Findability Metrics, Path Analysis, Revised IA | PDCA Log, Experiment Plan, Learning Outcome, Standard Change | Root cause notes, Countermeasures |
Tagsno overlap | Information architectureNavigationFindability | Continuous improvementLeanExperiments | Root causeIncidentLeanProblem solving |
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