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| Criterion |  UX Research Diary Study |  Operations ABC Analysis |  Product Discovery Kano Model |  Operations A3 Problem Solving |
|---|---|---|---|---|
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. | With many similar objects of differing economic significance, the method prioritizes effort by effect. It separates what needs regular steering from what rarely needs attention. | When features need to be distinguished by their effect on satisfaction, it makes expectations and surprises comparable. It separates basic needs, performance contribution, and delight. | 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. |
Complexitydifferent | Medium | Low | Medium | Medium |
Timedifferent | 1-4 Wochen | 30-60 min | 1-2 Tage | 45-90 min |
Participantsdifferent | 5-20 | 1-5 | 10-50 | 2-5 |
Formatdifferent | Async | Async | Workshop + async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | ABC Classification, Focus Rules, Control List | Kano Matrix, Feature Classes, Priority Themes | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | UX researchTrackingBehavior | PrioritizationOperationsPortfolio | SatisfactionPrioritizationCustomer | LeanProblem solvingCoachingOperations |