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| Criterion |  UX Research Diary Study |  Operations Root Cause Analysis |  Product Strategy Impact Mapping |  Operations Root Cause Tree Analysis |
|---|---|---|---|---|
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. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. | When a goal needs to be connected to several possible paths, it shows chains of impact instead of feature lists. It connects business goal, behavior change, and measures. | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | 1-4 Wochen | 1-4 h | 45-90 min | 1-3 h |
Participantsdifferent | 5-20 | 3-8 | 3-8 | 2-8 |
Formatdifferent | Async | Workshop + async | Workshop | Workshop |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Impact Map, Outcome Hypotheses, Delivery Options | Cause Tree, Evidence Notes, Countermeasures |
Tagsno overlap | UX researchTrackingBehavior | Root causeProblem solvingQualityIncident | OutcomesStrategyBehaviorPlanning | Root causeTreeIncidentQuality |