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| Criterion |  Operations Change Analysis |  UX Research First-click Testing |  Operations 5 Whys |  Operations Barrier Analysis |
|---|---|---|---|---|
Purposedifferent | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | When users immediately turn the wrong way on a screen or wireframe, first click testing checks initial orientation at high speed. The first click shows early whether expectation, labeling, and wayfinding fit together. | 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 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. |
Complexitydifferent | Medium | Low | Low | Medium |
Timedifferent | 45-120 min | 1-2 Tage | 15-30 min | 2-4 h |
Participantsdifferent | 2-6 | 10-30 | 2-6 | 2-6 |
Formatdifferent | Workshop + async | Async | Workshop | Workshop + async |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Click Heatmap, Success Rate, Design Recommendations | Root cause notes, Countermeasures | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | ChangeRoot causeTroubleshootingComparison | UXNavigationFindabilityValidation | Root causeIncidentLeanProblem solving | Root causeSafetyIncident |