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| Criterion |  Operations Kaizen Event |  UX Research Tree Testing |  Operations Gemba Walk |  UX Research First-click Testing |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | 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. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 0.5-5 Tage | 1-2 Tage | 30-120 min | 1-2 Tage |
Participantsdifferent | 4-10 | Based on research question | 2-6 | 10-30 |
Formatdifferent | Workshop | Async | Workshop | Async |
Outputdifferent | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update | Findability Metrics, Path Analysis, Revised IA | Observation Notes, Improvement Ideas | Click Heatmap, Success Rate, Design Recommendations |
Tagsno overlap | LeanContinuous improvementOperations | Information architectureNavigationFindability | LeanObservationProcessOperations | UXNavigationFindabilityValidation |