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| Criterion |  UX Research User Interviews |  Operations MORT Analysis |  Operations Family Tree Analysis |
|---|---|---|---|
Purposedifferent | When teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | For a safety-relevant event or a system with high protection requirements, the method examines where controls failed. It exposes both technical and organizational gaps. | For a series of incidents with a similar pattern, the method arranges individual events as branches of a common origin. It makes visible which conditions keep recurring. |
Complexitydifferent | Low | High | Medium |
Timedifferent | 30–60 min per interview | Mehrere Tage bis Wochen | 2-4 h |
Participantsdifferent | 1 participant per interview | 2-6 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Family Tree Diagram, Pattern Notes, Systemic Measures |
Tagsno overlap | QualitativeResearchCustomerDiscovery | Root causeSafetySystemicIncident | Root causePatternsIncidentSystemic |
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