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| Criterion |  UX Research Diary Study |  Operations A3 Problem Solving |  Operations After-Action Review |
|---|---|---|---|
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 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. | After missions or project phases with unclear outcomes, the method makes visible what actually happened and what can be learned from it. It separates course, effect, and causes so experience turns into solid improvement. |
Complexitydifferent | Medium | Medium | Low |
Timedifferent | 1-4 Wochen | 45-90 min | 20-45 min |
Participantsdifferent | 5-20 | 2-5 | 3-12 |
Formatdifferent | Async | Workshop + async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | A3 Report, Action Plan, Root Cause Analysis | Lessons learned, Action items, Event summary |
Tagsno overlap | UX researchTrackingBehavior | LeanProblem solvingCoachingOperations | LearningOperationsImprovement |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
