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| Criterion |  UX Research Diary Study |  Decision Making Delphi Method |  Product Discovery Test Card |
|---|---|---|---|
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 knowledge is distributed and direct dominance should be avoided, groups quickly fall under the sway of their opinion leaders. The Delphi Method gathers assessments iteratively and gradually brings expert judgments closer together. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | Medium | High | Low |
Timedifferent | 1-4 Wochen | 1-4 Wochen | 20-35 min |
Participantsdifferent | 5-20 | 6-30 Experten | 1-5 |
Formatdifferent | Async | Async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Expert Forecast, Consensus Range, Assumption Notes | Test Card with a pre-set threshold |
Tagsno overlap | UX researchTrackingBehavior | ForecastingExpertsDecisionStrategy | ExperimentsValidationDiscoveryHypothesis |
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