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| Criterion |  UX Research Affinity Diagramming |  Operations Root Cause Tree Analysis |  Operations Barrier Analysis |
|---|---|---|---|
Purposedifferent | 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 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 a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. |
Complexitydifferent | Low | Medium | Medium |
Timedifferent | 45–90 min | 1-3 h | 2-4 h |
Participantsdifferent | 3-10 | 2-8 | 2-6 |
Formatdifferent | Workshop | Workshop | Workshop + async |
Outputdifferent | Theme clusters, Insight statements, Opportunity areas | Cause Tree, Evidence Notes, Countermeasures | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tags1 shared | SynthesisQualitativeRoot cause | Root causeTreeIncidentQuality | Root causeSafetyIncident |
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