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| Criterion |  Decision Making Delphi Method |  Decision Making Three-Point Estimation |  Operations Kepner-Tregoe |  Operations 8D Problem Solving |
|---|---|---|---|---|
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. | A single estimate for effort, time, or risk often looks too smooth for the real uncertainty behind it. It separates options, evaluation criteria, and open risks. The result is captured as a Three-Point Estimate, Risk Range, and Assumption Notes. | 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. | 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. |
Complexitydifferent | High | Medium | High | High |
Timedifferent | 1-4 Wochen | 10-30 min je Item | 2-8 h | 1-6 Wochen |
Participantsdifferent | 6-30 Experten | 1-8 | 2-8 | 4-10 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Expert Forecast, Consensus Range, Assumption Notes | Three-Point Estimate, Risk Range, Assumption Notes | Problem Analysis, Decision Analysis, Risk Plan | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | ForecastingExpertsDecisionStrategy | EstimationUncertaintyForecasting | Problem solvingRoot causeDecisionOperations | QualityProblem solvingRoot cause |