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| Criterion |  UX Research Empathy Mapping |  Operations Fault Tree Analysis |  Operations Causal Factor Analysis |
|---|---|---|---|
Purposedifferent | When a lot is assumed about a target group but little is seen jointly, empathy mapping makes knowledge and gaps directly comparable. The picture also shows which assumptions hold up and where evidence is missing. | For a critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. | 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. |
Complexitydifferent | Low | High | High |
Timedifferent | 30–60 min | 2-6 h | 2-6 h |
Participantsdifferent | 4-8 | 3-8 | 3-10 |
Formatdifferent | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Empathy Map, Assumptions List, Research Gaps | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions |
Tagsno overlap | SynthesisQualitativeWorkshop | RiskRoot causeSafety | CausalityIncidentRoot causeTimeline |
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