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| Criterion |  UX Research Diary Study |  Product Discovery Smoke Test |  Engineering Goal Question Metric |  UX Research HEART Framework |
|---|---|---|---|---|
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 demand only needs to be roughly verified, it tests interest with minimal effort. It measures whether people would take a next step at all. | 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. | Helps clarify observations, needs, and patterns in concrete terms. It groups observations into patterns, questions, and decisions. The result is captured as a HEART-GSM table and dashboard. |
Complexitydifferent | Medium | Low | Medium | Medium |
Timedifferent | 1-4 Wochen | 1-5 Tage | 90-180 min | 120 min initial, dann laufend |
Participantsdifferent | 5-20 | Nutzertraffic | 3-6 | 3-6 |
Formatdifferent | Async | Async | Workshop | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Interest Metrics, Conversion Signal, Learning Note | GQM Table, Metric Profiles | HEART-GSM Table, Dashboard |
Tagsno overlap | UX researchTrackingBehavior | ValidationExperimentsDemandGrowth | MetricsMeasurementEngineeringAlignment | MetricsUX researchMeasurementSatisfaction |