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| Criterion |  UX Research Diary Study |  Operations A3 Problem Solving |  Product Discovery Riskiest Assumption Test |
|---|---|---|---|
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 an idea hinges on one critical unknown, it prioritizes testing that exact piece of uncertainty first. It separates problem, assumption, solution, and evidence. The result is captured as a prioritized list of assumptions, a test plan, and a result report. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 1-4 Wochen | 45-90 min | 1-2 Wochen pro Iteration |
Participantsdifferent | 5-20 | 2-5 | 2-6 |
Formatdifferent | Async | Workshop + async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | A3 Report, Action Plan, Root Cause Analysis | Prioritized Assumption List, Test Plan, Results Report |
Tagsno overlap | UX researchTrackingBehavior | LeanProblem solvingCoachingOperations | ExperimentsValidationDiscoveryAssumptions |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
