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| Criterion |  UX Research Diary Study |  Decision Making Wideband Delphi |  Decision Making PERT Estimation |
|---|---|---|---|
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. | A single opinion rarely holds up for planning when the future is genuinely uncertain. It separates options, evaluation criteria, and open risks. The result is captured as an Estimate Range, Assumption Log, and Expert Consensus Notes. | On complex initiatives, a plain average tends to understate just how uncertain the outcome really is. It separates options, evaluation criteria, and open risks. The result is captured as a PERT Estimate, Expected Value, and Risk Notes. |
Complexitydifferent | Medium | High | Medium |
Timedifferent | 1-4 Wochen | 1-4 h or multiple rounds | 15-45 min |
Participantsdifferent | 5-20 | 4-12 Experten | 1-8 |
Formatdifferent | Async | Workshop + async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Estimate Range, Assumption Log, Expert Consensus Notes | PERT Estimate, Expected Value, Risk Notes |
Tagsno overlap | UX researchTrackingBehavior | EstimationExpertsForecasting | EstimationUncertaintyRisk |
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