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Selected:Fault IsolationUsability TestingARID (Active Reviews for Intermediate Designs)First-click Testing
| Criterion |  Engineering Fault Isolation |  UX Research Usability Testing |  Architecture ARID (Active Reviews for Intermediate Designs) |  UX Research First-click Testing |
|---|---|---|---|---|
Purposedifferent | 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 product is built but people get stuck on tasks, usability testing shows the friction at concrete points. Observed use instead of self-report makes visible where orientation, understanding, or interaction breaks down. | ARID examines how well developers can work with a technical design. It focuses on a part of the system that can still be revised, between the architecture overview and the detailed specification. | 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. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | 30-180 min | 1-2 h je Session | 2–4 h review as a planning range; preparation and evaluation additional | 1-2 Tage |
Participantsdifferent | 1-6 | Based on research question | Designers, developers as users, and facilitation | 10-30 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Usability Issues, Severity List, Recommendations | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Click Heatmap, Success Rate, Design Recommendations |
Tagsno overlap | TroubleshootingDiagnosisEngineering | ValidationUXPrototype | ArchitectureEngineeringFeedbackValidationTasks | UXNavigationFindabilityValidation |