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| Criterion |  Decision Making Delphi Method |  Operations Family Tree Analysis |  Operations Root Cause Analysis |  Operations MORT 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 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. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. | 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. |
Complexitydifferent | High | Medium | Medium | High |
Timedifferent | 1-4 Wochen | 2-4 h | 1-4 h | Mehrere Tage bis Wochen |
Participantsdifferent | 6-30 Experten | 2-6 | 3-8 | 2-6 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Expert Forecast, Consensus Range, Assumption Notes | Family Tree Diagram, Pattern Notes, Systemic Measures | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations |
Tagsno overlap | ForecastingExpertsDecisionStrategy | Root causePatternsIncidentSystemic | Root causeProblem solvingQualityIncident | Root causeSafetySystemicIncident |