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| Criterion |  UX Research User Interviews |  Decision Making Pareto Analysis |  Decision Making Eisenhower Matrix |  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. | In many problem situations, effect is distributed unequally across many causes. A Pareto Analysis separates the few drivers with high leverage from the long remainder and focuses attention on what measurably moves the needle. | It separates true priorities from noise so it becomes clear what should be done now, scheduled, delegated, or dropped. | 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 | Low | Low | High |
Timedifferent | 30–60 min per interview | 30-60 min | 15-30 min | 1-6 Wochen |
Participantsdifferent | 1 participant per interview | 1-6 | 1-6 | 4-10 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Pareto Chart, Top Causes, Focus List | Eisenhower Matrix, Action List, Delegation Notes | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | QualitativeResearchCustomerDiscovery | PrioritizationQualityFocusRoot cause | PrioritizationFocusTasks | QualityProblem solvingRoot cause |