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| Criterion |  UX Research Tree Testing |  Engineering Failure Scenario Analysis |  Decision Making Pre-Mortem |  Decision Making Assumption Surfacing |
|---|---|---|---|---|
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. | 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. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 1-2 Tage | 1-3 h | 20–45 min | 45-90 min |
Participantsdifferent | Based on research question | 3-8 | Small cross-functional group | 2-8 |
Formatdifferent | Async | Workshop | Workshop | Workshop + async |
Outputdifferent | Findability Metrics, Path Analysis, Revised IA | Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions | Risk list, Mitigation plan, Assumption log | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | Information architectureNavigationFindability | FailureResilienceRisk | RiskDecisionFailurePlanning | AssumptionsRiskDecisionDiscovery |