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| Criterion |  Operations Kepner-Tregoe |  Decision Making Constraint Analysis |  Operations 8D Problem Solving |  Operations Root Cause Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | When an initiative stalls, the limit often lies not in the idea but in hard or soft boundary conditions. Constraint Analysis separates these limits and shows which of them can actually be shaped. | 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. | 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. |
Complexitydifferent | High | Low | High | Medium |
Timedifferent | 2-8 h | 30-90 min | 1-6 Wochen | 1-4 h |
Participantsdifferent | 2-8 | 2-8 | 4-10 | 3-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Problem Analysis, Decision Analysis, Risk Plan | Constraint List, Hard/Soft Classification, Option Impact Notes, Decision Boundaries | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tagsno overlap | Problem solvingRoot causeDecisionOperations | ConstraintsDecisionPlanningOptions | QualityProblem solvingRoot cause | Root causeProblem solvingQualityIncident |