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| Criterion |  Growth North Star Metric |  Growth Hooked Model |  UX Research Diary Study |
|---|---|---|---|
Purposedifferent | 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. | 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. | 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. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 1-2 h | Multiple workshops over several weeks | 1-4 Wochen |
Participantsdifferent | 3-8 | 2-8 | 5-20 |
Formatdifferent | Workshop + async | Workshop + async | Async |
Outputdifferent | North Star metric, Input metric tree, Measurement cadence | Hooked loop, Trigger map, Reward design, Ethics check | Diary Entries, Longitudinal Patterns, Experience Timeline |
Tagsno overlap | GrowthMetricsAlignmentRetention | GrowthBehaviorRetention | UX researchTrackingBehavior |
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