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| Criterion |  UX Research Diary Study |  Decision Making PERT Estimation |  Product Strategy Counter Metrics |
|---|---|---|---|
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. | On complex initiatives, a plain average tends to understate just how uncertain the outcome really is. It separates options, evaluation criteria, and open risks. The result is captured as a PERT Estimate, Expected Value, and Risk Notes. | When a headline metric could mask side effects, it adds guardrail signals against unwanted outcomes. It connects customer value, product logic, and decision priorities. The result is captured as a counter-metric list and guardrail definitions. |
Complexitydifferent | Medium | Medium | Low |
Timedifferent | 1-4 Wochen | 15-45 min | 30-60 min |
Participantsdifferent | 5-20 | 1-8 | 2-6 |
Formatdifferent | Async | Workshop + async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | PERT Estimate, Expected Value, Risk Notes | Counter Metric List, Guardrail Definitions |
Tagsno overlap | UX researchTrackingBehavior | EstimationUncertaintyRisk | MetricsMeasurementStrategyExperiments |
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