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| Criterion |  UX Research User Interviews |  UX Research Personas |  Operations Kaizen Event |
|---|---|---|---|
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 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. | For a tightly scoped process segment with noticeable waste, the method bundles shared energy for change. It suits situations that call for fast learning loops and visible adjustments. |
Complexitydifferent | Low | Medium | Medium |
Timedifferent | 30–60 min per interview | 1-3 Tage | 0.5-5 Tage |
Participantsdifferent | 1 participant per interview | Internes Team | 4-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Interview Notes, Themes, Insight Summary | Persona Profiles, Needs Summary, Scenario Notes | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update |
Tagsno overlap | QualitativeResearchCustomerDiscovery | ResearchCustomerSynthesis | LeanContinuous improvementOperations |
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