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| Criterion |  Operations Kaizen Event |  UX Research Tree Testing |  UX Research First-click Testing |  Operations A3 Problem Solving |
|---|---|---|---|---|
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 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 complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. |
Complexitydifferent | Medium | Medium | Low | Medium |
Timedifferent | 0.5-5 Tage | 1-2 Tage | 1-2 Tage | 45-90 min |
Participantsdifferent | 4-10 | Based on research question | 10-30 | 2-5 |
Formatdifferent | Workshop | Async | Async | Workshop + async |
Outputdifferent | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update | Findability Metrics, Path Analysis, Revised IA | Click Heatmap, Success Rate, Design Recommendations | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | LeanContinuous improvementOperations | Information architectureNavigationFindability | UXNavigationFindabilityValidation | LeanProblem solvingCoachingOperations |