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| Criterion | ![]() UX Research First-click Testing | ![]() UX Research Affinity Diagramming | ![]() Operations MORT Analysis | ![]() Operations Causal Factor 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. | When research notes, feedback, or observations sit unconnected side by side, affinity diagramming sorts the raw material into solid themes. Many individual points turn into patterns that make decisions and opportunities clearer. | 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. | 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. |
Complexitydifferent | Low | Low | High | High |
Timedifferent | 1-2 Tage | 45–90 min | Mehrere Tage bis Wochen | 2-6 h |
Participantsdifferent | 10-30 | 3-10 | 2-6 | 3-10 |
Formatdifferent | Async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Click Heatmap, Success Rate, Design Recommendations | Theme clusters, Insight statements, Opportunity areas | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions |
Tagsno overlap | UXNavigationFindabilityValidation | SynthesisQualitativeRoot cause | Root causeSafetySystemicIncident | CausalityIncidentRoot causeTimeline |



