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| Criterion |  UX Research Personas |  Operations 8D Problem Solving |  Operations MORT Analysis |  Operations Family Tree Analysis |
|---|---|---|---|---|
Purposedifferent | When target groups stay too vague and teams talk about the same people differently, personas create a shared, solid picture of usage. Condensed profiles make needs, contexts, and differences tangible enough for decisions. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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 | Medium | High | High | Medium |
Timedifferent | 1-3 Tage | 1-6 Wochen | Mehrere Tage bis Wochen | 2-4 h |
Participantsdifferent | Internes Team | 4-10 | 2-6 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Persona Profiles, Needs Summary, Scenario Notes | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Family Tree Diagram, Pattern Notes, Systemic Measures |
Tagsno overlap | ResearchCustomerSynthesis | QualityProblem solvingRoot cause | Root causeSafetySystemicIncident | Root causePatternsIncidentSystemic |