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| Criterion |  Decision Making Delphi Method |  Operations 5 Whys |  Decision Making DACI |  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 a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. | In cross-functional decisions, responsibilities quickly blur between approval, influence, and execution. DACI arranges these roles so decision pressure, contribution, and information stay cleanly separated. | 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 | Low | Low | High |
Timedifferent | 1-4 Wochen | 15-30 min | 30-60 min | 2-8 h |
Participantsdifferent | 6-30 Experten | 2-6 | 2-10 | 2-8 |
Formatdifferent | Async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Expert Forecast, Consensus Range, Assumption Notes | Root cause notes, Countermeasures | DACI Matrix, Decision Owner, Decision Log | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | ForecastingExpertsDecisionStrategy | Root causeIncidentLeanProblem solving | DecisionRolesGovernanceAlignment | Problem solvingRoot causeDecisionOperations |