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| Criterion |  Operations ABC Analysis |  UX Research Contextual Inquiry |  Operations 8D Problem Solving |  Operations Kepner-Tregoe |
|---|---|---|---|---|
Purposedifferent | With many similar objects of differing economic significance, the method prioritizes effort by effect. It separates what needs regular steering from what rarely needs attention. | When work processes are known only from accounts and the real context stays hidden, Contextual Inquiry makes behavior at the workplace visible. Observation and follow-up questions together show how people actually work, get interrupted, and improvise. | 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. | 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 | Medium | High | High |
Timedifferent | 30-60 min | 1-3 Wochen | 1-6 Wochen | 2-8 h |
Participantsdifferent | 1-5 | 4-12 Beobachtungen | 4-10 | 2-8 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | ABC Classification, Focus Rules, Control List | Field Notes, Workflow Insights, Pain Points | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | PrioritizationOperationsPortfolio | UX researchObservationContext | QualityProblem solvingRoot cause | Problem solvingRoot causeDecisionOperations |