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| Criterion |  Decision Making Delphi Method |  Operations 8D Problem Solving |  Decision Making RAPID |  Operations Kepner-Tregoe |
|---|---|---|---|---|
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 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. | In complex management decisions, clarity is often missing about who recommends, who agrees, and who makes the decision. RAPID creates this assignment and stabilizes decisions across several levels. | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. |
Complexitydifferent | High | High | Medium | High |
Timedifferent | 1-4 Wochen | 1-6 Wochen | 45-90 min | 2-8 h |
Participantsdifferent | 6-30 Experten | 4-10 | 3-12 | 2-8 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Expert Forecast, Consensus Range, Assumption Notes | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | RAPID Role Map, Recommendation, Decision Log | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | ForecastingExpertsDecisionStrategy | QualityProblem solvingRoot cause | DecisionRolesGovernance | Problem solvingRoot causeDecisionOperations |