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| Criterion |  UX Research Diary Study |  Operations Causal Factor Analysis |  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. | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. | 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 | High | Low |
Timedifferent | 1-4 Wochen | 2-6 h | 30-60 min |
Participantsdifferent | 5-20 | 3-10 | 2-6 |
Formatdifferent | Async | Workshop + async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Counter Metric List, Guardrail Definitions |
Tagsno overlap | UX researchTrackingBehavior | CausalityIncidentRoot causeTimeline | MetricsMeasurementStrategyExperiments |
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