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| Criterion | ![]() UX Research Affinity Diagramming | ![]() Operations Failure Mode and Effects Analysis | ![]() UX Research User Interviews | ![]() Operations Fishbone Diagram |
|---|---|---|---|---|
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 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. | When teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. |
Complexitydifferent | Low | High | Low | Low |
Timedifferent | 45–90 min | 2-6 h | 30–60 min per interview | 30-60 min |
Participantsdifferent | 3-10 | 3-10 | 1 participant per interview | 2-8 |
Formatdifferent | Workshop | Workshop | Workshop + async | Workshop |
Outputdifferent | Theme clusters, Insight statements, Opportunity areas | FMEA Table, Risk Priority, Mitigation Actions | Interview Notes, Themes, Insight Summary | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | SynthesisQualitativeRoot cause | RiskQualityOperationsRoot cause | QualitativeResearchCustomerDiscovery | Root causeQualityOperations |



