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| Criterion |  UX Research Contextual Inquiry |  Operations MORT Analysis |  Systems Thinking Current Reality Tree |  Operations Family Tree Analysis |
|---|---|---|---|---|
Purposedifferent | When work processes are known only from accounts and the real context stays hidden, Contextual Inquiry makes behavior at the workplace visible. Observation and follow-up questions together show how people actually work, get interrupted, and improvise. | 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. | A Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once. | 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 | Medium | High | High | Medium |
Timedifferent | 1-3 Wochen | Mehrere Tage bis Wochen | 2-6 h | 2-4 h |
Participantsdifferent | 4-12 Beobachtungen | 2-6 | 3-8 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Field Notes, Workflow Insights, Pain Points | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Current Reality Tree, Core Problems, Intervention Ideas | Family Tree Diagram, Pattern Notes, Systemic Measures |
Tagsno overlap | UX researchObservationContext | Root causeSafetySystemicIncident | Systems thinkingRoot causeConstraintsCausality | Root causePatternsIncidentSystemic |