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| Criterion |  Operations Fault Tree Analysis |  UX Research Personas |  UX Research Affinity Diagramming |
|---|---|---|---|
Purposedifferent | 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. | 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. | When research notes, feedback, or observations sit unconnected side by side, affinity diagramming sorts the raw material into solid themes. Many individual points turn into patterns that make decisions and opportunities clearer. |
Complexitydifferent | High | Medium | Low |
Timedifferent | 2-6 h | 1-3 Tage | 45–90 min |
Participantsdifferent | 3-8 | Internes Team | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Persona Profiles, Needs Summary, Scenario Notes | Theme clusters, Insight statements, Opportunity areas |
Tagsno overlap | RiskRoot causeSafety | ResearchCustomerSynthesis | SynthesisQualitativeRoot cause |
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