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| Criterion |  UX Research Diary Study |  Operations Process Mapping |  Operations Theory of Constraints |  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. | With a confusing workflow that has many handoffs, the method makes the actual process visible. It shows where work is passed on, delayed, or duplicated, so improvement targets the right spots. | For a system that does not get faster despite effort, the method directs attention to the bottleneck. It concentrates improvement on the point that actually limits throughput. | 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 | High | Low |
Timedifferent | 1-4 Wochen | 1-3 h | 2-4 h Analyse, laufend | 30-120 min |
Participantsdifferent | 5-20 | 3-10 | 3-12 | 2-6 |
Formatdifferent | Async | Workshop | Workshop + async | Workshop |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Process Map, Handoff List, Improvement Backlog | Constraint Map, Improvement Plan, Flow Metrics | Observation Notes, Improvement Ideas |
Tagsno overlap | UX researchTrackingBehavior | ProcessOperationsImprovement | OperationsConstraintsFlowImprovement | LeanObservationProcessOperations |