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| Criterion |  UX Research Diary Study |  Decision Making Delphi Method |  Product Strategy ICE Scoring |  Delivery Cost of Delay |
|---|---|---|---|---|
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. | When ideas need sorting quickly, it condenses impact, confidence, and effort into one compact score. It connects customer value, product logic, and decision priorities. The result is captured as an ICE table and top-ideas list. | Helps clarify scope, order, and delivery flow in concrete terms. It makes work, constraints, and sequence manageable. The result is captured as a Cost of Delay table and prioritization sequence. |
Complexitydifferent | Medium | High | Low | High |
Timedifferent | 1-4 Wochen | 1-4 Wochen | 30-60 min | 90-180 min |
Participantsdifferent | 5-20 | 6-30 Experten | 2-8 | 3-8 |
Formatdifferent | Async | Async | Workshop + async | Workshop |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Expert Forecast, Consensus Range, Assumption Notes | ICE Table, Top Idea List | CoD Table, Prioritization Sequence |
Tagsno overlap | UX researchTrackingBehavior | ForecastingExpertsDecisionStrategy | PrioritizationScoringGrowthDecision | PrioritizationDeliveryEconomicsDecision |