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| Criterion |  UX Research User Interviews |  Operations Standard Work Analysis |  Operations 8D Problem Solving |
|---|---|---|---|
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 the same task is done differently depending on the person, the method exposes the reliable core. It creates comparability without unnecessarily choking off needed latitude. | 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 | Low | Medium | High |
Timedifferent | 30–60 min per interview | 1-3 h | 1-6 Wochen |
Participantsdifferent | 1 participant per interview | 2-6 | 4-10 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Standard Work Sheet, Deviation List, Improved Standard, Training Needs | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | QualitativeResearchCustomerDiscovery | LeanProcessQuality | QualityProblem solvingRoot cause |
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