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| Criterion | ![]() Operations 8D Problem Solving | ![]() UX Research Surveys | ![]() Operations Causal Factor Analysis |
|---|---|---|---|
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. | When a topic needs to be validated broadly and many people can answer the same question, surveys gather structured feedback in a scalable form. Answers become comparable and segmentable instead of remaining merely anecdotal. | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. |
Complexitydifferent | High | Medium | High |
Timedifferent | 1-6 Wochen | 3-14 Tage | 2-6 h |
Participantsdifferent | 4-10 | 50+ | 3-10 |
Formatdifferent | Workshop + async | Async | Workshop + async |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Survey Results, Charts, Segment Insights | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions |
Tagsno overlap | QualityProblem solvingRoot cause | QuantitativeResearchValidation | CausalityIncidentRoot causeTimeline |
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