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| Criterion |  UX Research Diary Study |  Decision Making Wideband Delphi |  Decision Making Delphi Method |  Product Strategy Impact Mapping |
|---|---|---|---|---|
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. | 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. | When a goal needs to be connected to several possible paths, it shows chains of impact instead of feature lists. It connects business goal, behavior change, and measures. |
Complexitydifferent | Medium | High | High | Medium |
Timedifferent | 1-4 Wochen | 1-4 h or multiple rounds | 1-4 Wochen | 45-90 min |
Participantsdifferent | 5-20 | 4-12 Experten | 6-30 Experten | 3-8 |
Formatdifferent | Async | Workshop + async | Async | Workshop |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Estimate Range, Assumption Log, Expert Consensus Notes | Expert Forecast, Consensus Range, Assumption Notes | Impact Map, Outcome Hypotheses, Delivery Options |
Tagsno overlap | UX researchTrackingBehavior | EstimationExpertsForecasting | ForecastingExpertsDecisionStrategy | OutcomesStrategyBehaviorPlanning |