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| Criterion |  UX Research Diary Study |  Product Discovery Jobs to Be Done |  Operations Kaizen Event |
|---|---|---|---|
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 switching motives and progress are unclear, it reconstructs the situation from real customer circumstances. It shows why a switch happens and what kind of progress is being sought. | For a tightly scoped process segment with noticeable waste, the method bundles shared energy for change. It suits situations that call for fast learning loops and visible adjustments. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 1-4 Wochen | 1-3 Wochen | 0.5-5 Tage |
Participantsdifferent | 5-20 | 5-12 Interviews | 4-10 |
Formatdifferent | Async | Workshop + async | Workshop |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Job Stories, Outcome Statements, Opportunity List | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update |
Tagsno overlap | UX researchTrackingBehavior | CustomerOutcomesNeeds | LeanContinuous improvementOperations |
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