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| Criterion |  UX Research User Interviews |  Operations Fishbone Diagram |  UX Research Personas |
|---|---|---|---|
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. | 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. | When target groups stay too vague and teams talk about the same people differently, personas create a shared, solid picture of usage. Condensed profiles make needs, contexts, and differences tangible enough for decisions. |
Complexitydifferent | Low | Low | Medium |
Timedifferent | 30–60 min per interview | 30-60 min | 1-3 Tage |
Participantsdifferent | 1 participant per interview | 2-8 | Internes Team |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Fishbone Diagram, Cause Categories, Investigation Backlog | Persona Profiles, Needs Summary, Scenario Notes |
Tagsno overlap | QualitativeResearchCustomerDiscovery | Root causeQualityOperations | ResearchCustomerSynthesis |
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