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| Criterion |  UX Research Personas |  Operations A3 Problem Solving |  UX Research User Interviews |  Operations Gemba Walk |
|---|---|---|---|---|
Purposedifferent | 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 complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | 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 there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 1-3 Tage | 45-90 min | 30–60 min per interview | 30-120 min |
Participantsdifferent | Internes Team | 2-5 | 1 participant per interview | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Persona Profiles, Needs Summary, Scenario Notes | A3 Report, Action Plan, Root Cause Analysis | Interview Notes, Themes, Insight Summary | Observation Notes, Improvement Ideas |
Tagsno overlap | ResearchCustomerSynthesis | LeanProblem solvingCoachingOperations | QualitativeResearchCustomerDiscovery | LeanObservationProcessOperations |