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| Criterion |  UX Research Affinity Diagramming |  Operations 8D Problem Solving |  UX Research Customer Journey Mapping |  Operations 5 Whys |
|---|---|---|---|---|
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 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 user journey falls apart across many touchpoints, customer journey mapping makes the experience visible as a coherent arc. Phases, emotions, and breaks become legible enough to prioritize critical moments deliberately. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Low | High | Medium | Low |
Timedifferent | 45–90 min | 1-6 Wochen | 2-4 h | 15-30 min |
Participantsdifferent | 3-10 | 4-10 | 4-10 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop |
Outputdifferent | Theme clusters, Insight statements, Opportunity areas | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Journey Map, Pain-point List, Opportunity Backlog | Root cause notes, Countermeasures |
Tagsno overlap | SynthesisQualitativeRoot cause | QualityProblem solvingRoot cause | JourneyServiceService design | Root causeIncidentLeanProblem solving |