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| Criterion |  Operations Root Cause Tree Analysis |  Operations 8D Problem Solving |  UX Research Affinity Diagramming |
|---|---|---|---|
Purposedifferent | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | 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 research notes, feedback, or observations sit unconnected side by side, affinity diagramming sorts the raw material into solid themes. Many individual points turn into patterns that make decisions and opportunities clearer. |
Complexitydifferent | Medium | High | Low |
Timedifferent | 1-3 h | 1-6 Wochen | 45–90 min |
Participantsdifferent | 2-8 | 4-10 | 3-10 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Theme clusters, Insight statements, Opportunity areas |
Tags1 shared | Root causeTreeIncidentQuality | QualityProblem solvingRoot cause | SynthesisQualitativeRoot cause |
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