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| Criterion |  UX Research First-click Testing |  Operations 5 Whys |  UX Research Tree Testing |  Operations Barrier 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 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. | When a navigation exists but search paths still fail, tree testing checks findability without visual distraction. The method shows whether labels, levels, and paths really lead to the intended destination. | 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 | Low | Low | Medium | Medium |
Timedifferent | 1-2 Tage | 15-30 min | 1-2 Tage | 2-4 h |
Participantsdifferent | 10-30 | 2-6 | Based on research question | 2-6 |
Formatdifferent | Async | Workshop | Async | Workshop + async |
Outputdifferent | Click Heatmap, Success Rate, Design Recommendations | Root cause notes, Countermeasures | Findability Metrics, Path Analysis, Revised IA | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | UXNavigationFindabilityValidation | Root causeIncidentLeanProblem solving | Information architectureNavigationFindability | Root causeSafetyIncident |