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| Criterion |  Operations 5 Whys |  UX Research Empathy Mapping |  UX Research Affinity Diagramming |  Operations A3 Problem Solving |
|---|---|---|---|---|
Purposedifferent | 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. | When a lot is assumed about a target group but little is seen jointly, empathy mapping makes knowledge and gaps directly comparable. The picture also shows which assumptions hold up and where evidence is missing. | 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 complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. |
Complexitydifferent | Low | Low | Low | Medium |
Timedifferent | 15-30 min | 30–60 min | 45–90 min | 45-90 min |
Participantsdifferent | 2-6 | 4-8 | 3-10 | 2-5 |
Formatdifferent | Workshop | Workshop | Workshop | Workshop + async |
Outputdifferent | Root cause notes, Countermeasures | Empathy Map, Assumptions List, Research Gaps | Theme clusters, Insight statements, Opportunity areas | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | Root causeIncidentLeanProblem solving | SynthesisQualitativeWorkshop | SynthesisQualitativeRoot cause | LeanProblem solvingCoachingOperations |