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| Criterion |  Operations Fishbone Diagram |  Operations Failure Mode and Effects Analysis |  Operations ALPEN Method |  Operations Kepner-Tregoe |
|---|---|---|---|---|
Purposedifferent | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | With an overloaded day full of too many tasks, a realistic picture of the day emerges. The method connects estimating, deciding, and buffer thinking so planning fits available energy and time. | 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 | Low | High | Low | High |
Timedifferent | 30-60 min | 2-6 h | 10-20 min daily | 2-8 h |
Participantsdifferent | 2-8 | 3-10 | 1 | 2-8 |
Formatdifferent | Workshop | Workshop | Async | Workshop + async |
Outputdifferent | Fishbone Diagram, Cause Categories, Investigation Backlog | FMEA Table, Risk Priority, Mitigation Actions | Daily Plan, Time Estimates, Review Notes | Problem Analysis, Decision Analysis, Risk Plan |
Tags1 shared | Root causeQualityOperations | RiskQualityOperationsRoot cause | PlanningTime managementProductivityOperations | Problem solvingRoot causeDecisionOperations |