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| Criterion |  UX Research Diary Study |  Growth Hooked Model |  Delivery Cost of Delay |  Growth North Star Metric |
|---|---|---|---|---|
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. | The Hooked Model helps clarify engagement loops, user behavior, and experiments. It makes repeat behavior measurable and captures the result as a hooked loop, trigger map, and reward design. | 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 product teams track many metrics, the view of the actual customer outcome easily gets lost. A North Star Metric bundles growth, usage, and value contribution into one signal that makes the system's direction visible. |
Complexitydifferent | Medium | Medium | High | Medium |
Timedifferent | 1-4 Wochen | Multiple workshops over several weeks | 90-180 min | 1-2 h |
Participantsdifferent | 5-20 | 2-8 | 3-8 | 3-8 |
Formatdifferent | Async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Hooked loop, Trigger map, Reward design, Ethics check | CoD Table, Prioritization Sequence | North Star metric, Input metric tree, Measurement cadence |
Tagsno overlap | UX researchTrackingBehavior | GrowthBehaviorRetention | PrioritizationDeliveryEconomicsDecision | GrowthMetricsAlignmentRetention |