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Selected:Root Cause Tree AnalysisAffinity DiagrammingFailure Mode and Effects Analysis8D Problem Solving
| Criterion |  Operations Root Cause Tree Analysis |  UX Research Affinity Diagramming |  Operations Failure Mode and Effects Analysis |  Operations 8D Problem Solving |
|---|---|---|---|---|
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. | 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. | 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. | 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. |
Complexitydifferent | Medium | Low | High | High |
Timedifferent | 1-3 h | 45–90 min | 2-6 h | 1-6 Wochen |
Participantsdifferent | 2-8 | 3-10 | 3-10 | 4-10 |
Formatdifferent | Workshop | Workshop | Workshop | Workshop + async |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | Theme clusters, Insight statements, Opportunity areas | FMEA Table, Risk Priority, Mitigation Actions | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tags1 shared | Root causeTreeIncidentQuality | SynthesisQualitativeRoot cause | RiskQualityOperationsRoot cause | QualityProblem solvingRoot cause |