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| Criterion |  UX Research First-click Testing |  Engineering Fault Isolation |  UX Research Tree Testing |
|---|---|---|---|
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. | In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected. | 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. |
Complexitydifferent | Low | Medium | Medium |
Timedifferent | 1-2 Tage | 30-180 min | 1-2 Tage |
Participantsdifferent | 10-30 | 1-6 | Based on research question |
Formatdifferent | Async | Workshop + async | Async |
Outputdifferent | Click Heatmap, Success Rate, Design Recommendations | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Findability Metrics, Path Analysis, Revised IA |
Tagsno overlap | UXNavigationFindabilityValidation | TroubleshootingDiagnosisEngineering | Information architectureNavigationFindability |
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