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| Criterion |  UX Research Diary Study |  Operations A3 Problem Solving |  Product Discovery Learning Card |  Product Discovery Product Kata |
|---|---|---|---|---|
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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | Product Kata helps clarify customer problems, solution ideas, and evidence through a repeatable improvement routine. It captures direction, current metric, target metric, experiment notes, and learning. |
Complexitydifferent | Medium | Medium | Low | Medium |
Timedifferent | 1-4 Wochen | 45-90 min | 25-40 min | 1-2 Wochen je Loop |
Participantsdifferent | 5-20 | 2-5 | 1-5 | 3-10 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | A3 Report, Action Plan, Root Cause Analysis | Learning Card with evidence and next action | Direction, Current metric, Target metric, Experiment note, Learning report |
Tagsno overlap | UX researchTrackingBehavior | LeanProblem solvingCoachingOperations | ExperimentsValidationDiscoveryLearning | OutcomesDiscoveryLearningIterationCoaching |