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| Criterion |  UX Research Tree Testing |  Operations Gemba Walk |  Operations Kaizen Event |  Operations PDCA Cycle |
|---|---|---|---|---|
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 there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | For a tightly scoped process segment with noticeable waste, the method bundles shared energy for change. It suits situations that call for fast learning loops and visible adjustments. | 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. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | 1-2 Tage | 30-120 min | 0.5-5 Tage | 1 h bis mehrere Wochen |
Participantsdifferent | Based on research question | 2-6 | 4-10 | 1-8 |
Formatdifferent | Async | Workshop | Workshop | Workshop + async |
Outputdifferent | Findability Metrics, Path Analysis, Revised IA | Observation Notes, Improvement Ideas | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update | PDCA Log, Experiment Plan, Learning Outcome, Standard Change |
Tagsno overlap | Information architectureNavigationFindability | LeanObservationProcessOperations | LeanContinuous improvementOperations | Continuous improvementLeanExperiments |