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| Criterion |  UX Research User Interviews |  Operations Change Analysis |  Operations 5 Whys |
|---|---|---|---|
Purposedifferent | 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. | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | 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 | Medium | Low |
Timedifferent | 30–60 min per interview | 45-120 min | 15-30 min |
Participantsdifferent | 1 participant per interview | 2-6 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Interview Notes, Themes, Insight Summary | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Root cause notes, Countermeasures |
Tagsno overlap | QualitativeResearchCustomerDiscovery | ChangeRoot causeTroubleshootingComparison | Root causeIncidentLeanProblem solving |
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