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| Criterion |  Decision Making Delphi Method |  UX Research First-click Testing |  UX Research Tree Testing |  UX Research Card Sorting |
|---|---|---|---|---|
Purposedifferent | When knowledge is distributed and direct dominance should be avoided, groups quickly fall under the sway of their opinion leaders. The Delphi Method gathers assessments iteratively and gradually brings expert judgments closer together. | 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. | 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. | When content only makes sense internally and users can't find the structure again, card sorting exposes their mental order. Terms, groups, and naming are then aligned with the target group's expectations. |
Complexitydifferent | High | Low | Medium | Low |
Timedifferent | 1-4 Wochen | 1-2 Tage | 1-2 Tage | 20-45 min |
Participantsdifferent | 6-30 Experten | 10-30 | Based on research question | Based on research question |
Formatdifferent | Async | Async | Async | Workshop + async |
Outputdifferent | Expert Forecast, Consensus Range, Assumption Notes | Click Heatmap, Success Rate, Design Recommendations | Findability Metrics, Path Analysis, Revised IA | Content groups, Label set, IA hypotheses |
Tagsno overlap | ForecastingExpertsDecisionStrategy | UXNavigationFindabilityValidation | Information architectureNavigationFindability | Information architectureNavigationStructure |