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| Criterion |  UX Research First-click Testing |  Operations Barrier Analysis |  Operations Causal Factor Analysis |  Operations Family Tree Analysis |
|---|---|---|---|---|
Purposedifferent | 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 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 an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. | For a series of incidents with a similar pattern, the method arranges individual events as branches of a common origin. It makes visible which conditions keep recurring. |
Complexitydifferent | Low | Medium | High | Medium |
Timedifferent | 1-2 Tage | 2-4 h | 2-6 h | 2-4 h |
Participantsdifferent | 10-30 | 2-6 | 3-10 | 2-6 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Click Heatmap, Success Rate, Design Recommendations | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Family Tree Diagram, Pattern Notes, Systemic Measures |
Tagsno overlap | UXNavigationFindabilityValidation | Root causeSafetyIncident | CausalityIncidentRoot causeTimeline | Root causePatternsIncidentSystemic |