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| Criterion |  UX Research Diary Study |  Facilitation Decision Jam |  Operations Gemba Walk |  Operations 5 Whys |
|---|---|---|---|---|
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. | When a decision is stuck, Decision Jam loosens the knot through structured separation of problem, idea, and selection. The format creates movement without jumping prematurely at the first seemingly elegant answer. | 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 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 | Low |
Timedifferent | 1-4 Wochen | 60-90 min | 30-120 min | 15-30 min |
Participantsdifferent | 5-20 | 4-10 | 2-6 | 2-6 |
Formatdifferent | Async | Workshop | Workshop | Workshop |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Problem Cluster, Prioritized Challenge, Experiment | Observation Notes, Improvement Ideas | Root cause notes, Countermeasures |
Tagsno overlap | UX researchTrackingBehavior | FacilitationDecisionProblem solvingWorkshop | LeanObservationProcessOperations | Root causeIncidentLeanProblem solving |