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| Criterion |  UX Research Personas |  Operations Failure Mode and Effects Analysis |  UX Research User Interviews |  Operations 8D Problem Solving |
|---|---|---|---|---|
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 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. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. |
Complexitydifferent | Medium | High | Low | High |
Timedifferent | 1-3 Tage | 2-6 h | 30–60 min per interview | 1-6 Wochen |
Participantsdifferent | Internes Team | 3-10 | 1 participant per interview | 4-10 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Persona Profiles, Needs Summary, Scenario Notes | FMEA Table, Risk Priority, Mitigation Actions | Interview Notes, Themes, Insight Summary | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | ResearchCustomerSynthesis | RiskQualityOperationsRoot cause | QualitativeResearchCustomerDiscovery | QualityProblem solvingRoot cause |