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| Criterion |  Decision Making Delphi Method |  Decision Making Decision Tree |  Operations MORT Analysis |  Operations Root Cause Tree Analysis |
|---|---|---|---|---|
Purposedifferent | When knowledge is distributed and direct dominance should be avoided, groups quickly fall under the sway of their opinion leaders. The Delphi Method gathers assessments iteratively and gradually brings expert judgments closer together. | For decisions with follow-on paths and dependencies, a linear comparison is often not enough. A Decision Tree shows how options branch under conditions and which consequences hang on each branch. | 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 problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. |
Complexitydifferent | High | Medium | High | Medium |
Timedifferent | 1-4 Wochen | 30-90 min | Mehrere Tage bis Wochen | 1-3 h |
Participantsdifferent | 6-30 Experten | 1-6 | 2-6 | 2-8 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Expert Forecast, Consensus Range, Assumption Notes | Decision Tree, Option Map, Assumption List | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Cause Tree, Evidence Notes, Countermeasures |
Tagsno overlap | ForecastingExpertsDecisionStrategy | DecisionTreeOptions | Root causeSafetySystemicIncident | Root causeTreeIncidentQuality |