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| Criterion |  UX Research Diary Study |  Product Discovery Kano Model |  Delivery Cost of Delay |  Product Strategy ICE Scoring |
|---|---|---|---|---|
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. | 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. | 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. |
Complexitydifferent | Medium | Medium | High | Low |
Timedifferent | 1-4 Wochen | 1-2 Tage | 90-180 min | 30-60 min |
Participantsdifferent | 5-20 | 10-50 | 3-8 | 2-8 |
Formatdifferent | Async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Kano Matrix, Feature Classes, Priority Themes | CoD Table, Prioritization Sequence | ICE Table, Top Idea List |
Tagsno overlap | UX researchTrackingBehavior | SatisfactionPrioritizationCustomer | PrioritizationDeliveryEconomicsDecision | PrioritizationScoringGrowthDecision |