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| Criterion |  UX Research Diary Study |  Product Discovery Kano Model |  Product Discovery Smoke 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. | 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 demand only needs to be roughly verified, it tests interest with minimal effort. It measures whether people would take a next step at all. |
Complexitydifferent | Medium | Medium | Low |
Timedifferent | 1-4 Wochen | 1-2 Tage | 1-5 Tage |
Participantsdifferent | 5-20 | 10-50 | Nutzertraffic |
Formatdifferent | Async | Workshop + async | Async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Kano Matrix, Feature Classes, Priority Themes | Interest Metrics, Conversion Signal, Learning Note |
Tagsno overlap | UX researchTrackingBehavior | SatisfactionPrioritizationCustomer | ValidationExperimentsDemandGrowth |
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