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| Criterion |  UX Research Diary Study |  Product Discovery Kano Model |  Operations Gemba Walk |  Operations ABC 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 features need to be distinguished by their effect on satisfaction, it makes expectations and surprises comparable. It separates basic needs, performance contribution, and delight. | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | 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. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 1-4 Wochen | 1-2 Tage | 30-120 min | 30-60 min |
Participantsdifferent | 5-20 | 10-50 | 2-6 | 1-5 |
Formatdifferent | Async | Workshop + async | Workshop | Async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Kano Matrix, Feature Classes, Priority Themes | Observation Notes, Improvement Ideas | ABC Classification, Focus Rules, Control List |
Tagsno overlap | UX researchTrackingBehavior | SatisfactionPrioritizationCustomer | LeanObservationProcessOperations | PrioritizationOperationsPortfolio |