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| Criterion |  UX Research Empathy Mapping |  UX Research Card Sorting |  Operations 5 Whys |  UX Research Affinity Diagramming |
|---|---|---|---|---|
Purposedifferent | 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 content only makes sense internally and users can't find the structure again, card sorting exposes their mental order. Terms, groups, and naming are then aligned with the target group's expectations. | 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 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. |
Complexitysame | Low | Low | Low | Low |
Timedifferent | 30–60 min | 20-45 min | 15-30 min | 45–90 min |
Participantsdifferent | 4-8 | Based on research question | 2-6 | 3-10 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop |
Outputdifferent | Empathy Map, Assumptions List, Research Gaps | Content groups, Label set, IA hypotheses | Root cause notes, Countermeasures | Theme clusters, Insight statements, Opportunity areas |
Tagsno overlap | SynthesisQualitativeWorkshop | Information architectureNavigationStructure | Root causeIncidentLeanProblem solving | SynthesisQualitativeRoot cause |