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| Criterion |  UX Research Diary Study |  Operations A3 Problem Solving |  Product Discovery MVP Test Matrix |
|---|---|---|---|
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. | When several minimal variants compete to answer the same question, it makes comparing and choosing between them cleaner. It separates problem, assumption, solution, and evidence. The result is captured as a Test Matrix and a Test Plan. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 1-4 Wochen | 45-90 min | 45-75 min |
Participantsdifferent | 5-20 | 2-5 | 2-8 |
Formatdifferent | Async | Workshop + async | Workshop |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | A3 Report, Action Plan, Root Cause Analysis | Test Matrix, Test Plan |
Tagsno overlap | UX researchTrackingBehavior | LeanProblem solvingCoachingOperations | ExperimentsValidationDiscoveryOptions |
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