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| Criterion |  UX Research Diary Study |  Operations Kaizen Event |  Operations ABC Analysis |  Operations Gemba Walk |
|---|---|---|---|---|
Purposedifferent | When experiences build up over days or weeks and a single session cannot capture them, Diary Study records the course of everyday life. Recurring triggers, moods, and habits become visible this way, beyond the sharpness of memory. | 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. | With many similar objects of differing economic significance, the method prioritizes effort by effect. It separates what needs regular steering from what rarely needs attention. | 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. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 1-4 Wochen | 0.5-5 Tage | 30-60 min | 30-120 min |
Participantsdifferent | 5-20 | 4-10 | 1-5 | 2-6 |
Formatdifferent | Async | Workshop | Async | Workshop |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update | ABC Classification, Focus Rules, Control List | Observation Notes, Improvement Ideas |
Tagsno overlap | UX researchTrackingBehavior | LeanContinuous improvementOperations | PrioritizationOperationsPortfolio | LeanObservationProcessOperations |