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| Criterion |  UX Research Tree Testing |  Engineering Failure Scenario Analysis |  UX Research First-click Testing |  Decision Making Pre-Mortem |
|---|---|---|---|---|
Purposedifferent | 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. | In critical processes, it is not enough to plan only for the normal case. Failure Scenario Analysis looks at the path into failure and shows which failures, chains, and control gaps cause the most damage. | 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 early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 1-2 Tage | 1-3 h | 1-2 Tage | 20–45 min |
Participantsdifferent | Based on research question | 3-8 | 10-30 | Small cross-functional group |
Formatdifferent | Async | Workshop | Async | Workshop |
Outputdifferent | Findability Metrics, Path Analysis, Revised IA | Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions | Click Heatmap, Success Rate, Design Recommendations | Risk list, Mitigation plan, Assumption log |
Tagsno overlap | Information architectureNavigationFindability | FailureResilienceRisk | UXNavigationFindabilityValidation | RiskDecisionFailurePlanning |