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| Criterion | ![]() UX Research Diary Study | ![]() Growth Hooked Model | ![]() Growth North Star Metric | ![]() Engineering Goal Question 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. | 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. | Helps clarify technical problems, hypotheses, and next steps in concrete terms. It breaks a technical problem into testable parts. The result is captured as a GQM table and metric briefs. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | 1-4 Wochen | Multiple workshops over several weeks | 1-2 h | 90-180 min |
Participantsdifferent | 5-20 | 2-8 | 3-8 | 3-6 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Hooked loop, Trigger map, Reward design, Ethics check | North Star metric, Input metric tree, Measurement cadence | GQM Table, Metric Profiles |
Tagsno overlap | UX researchTrackingBehavior | GrowthBehaviorRetention | GrowthMetricsAlignmentRetention | MetricsMeasurementEngineeringAlignment |



