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| Criterion |  UX Research Surveys |  Operations Barrier Analysis |  Operations 5 Whys |
|---|---|---|---|
Purposedifferent | When a topic needs to be validated broadly and many people can answer the same question, surveys gather structured feedback in a scalable form. Answers become comparable and segmentable instead of remaining merely anecdotal. | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Medium | Medium | Low |
Timedifferent | 3-14 Tage | 2-4 h | 15-30 min |
Participantsdifferent | 50+ | 2-6 | 2-6 |
Formatdifferent | Async | Workshop + async | Workshop |
Outputdifferent | Survey Results, Charts, Segment Insights | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Root cause notes, Countermeasures |
Tagsno overlap | QuantitativeResearchValidation | Root causeSafetyIncident | Root causeIncidentLeanProblem solving |
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