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| Criterion |  UX Research Surveys |  Operations Barrier Analysis |  Operations 5 Whys |  Operations MORT Analysis |
|---|---|---|---|---|
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. | For a safety-relevant event or a system with high protection requirements, the method examines where controls failed. It exposes both technical and organizational gaps. |
Complexitydifferent | Medium | Medium | Low | High |
Timedifferent | 3-14 Tage | 2-4 h | 15-30 min | Mehrere Tage bis Wochen |
Participantsdifferent | 50+ | 2-6 | 2-6 | 2-6 |
Formatdifferent | Async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Survey Results, Charts, Segment Insights | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Root cause notes, Countermeasures | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations |
Tagsno overlap | QuantitativeResearchValidation | Root causeSafetyIncident | Root causeIncidentLeanProblem solving | Root causeSafetySystemicIncident |