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| Criterion |  Operations 8D Problem Solving |  Operations Eat the Frog |  Operations Change Analysis |  Operations Ivy Lee Method |
|---|---|---|---|---|
Purposedifferent | 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. | The method protects energy and attention for the task that creates the largest progress and is often postponed. | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | With a restless workday full of too many open items, the method creates radical simplicity. It directs attention to a short sequence instead of a broad, still-open field. |
Complexitydifferent | High | Low | Medium | Low |
Timedifferent | 1-6 Wochen | 15-90 min daily | 45-120 min | 5-10 min daily |
Participantsdifferent | 4-10 | 1 | 2-6 | 1 |
Formatdifferent | Workshop + async | Async | Workshop + async | Async |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Priority Task, Completion Note, Daily Focus | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Daily Priority List, Completion Notes |
Tagsno overlap | QualityProblem solvingRoot cause | PrioritizationProductivityFocusExecution | ChangeRoot causeTroubleshootingComparison | PrioritizationProductivityExecution |