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| Criterion |  UX Research Tree Testing |  Decision Making Delphi Method |  UX Research Card Sorting |  Decision Making OODA Loop |
|---|---|---|---|---|
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. | 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 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. | In dynamic situations, decisions become outdated faster than they can be prepared. The OODA Loop holds observing, orienting, deciding, and acting together as a recurring rhythm so reaction does not slide into inertia. |
Complexitydifferent | Medium | High | Low | Medium |
Timedifferent | 1-2 Tage | 1-4 Wochen | 20-45 min | 15-60 min je Zyklus |
Participantsdifferent | Based on research question | 6-30 Experten | Based on research question | 1-8 |
Formatdifferent | Async | Async | Workshop + async | Workshop + async |
Outputdifferent | Findability Metrics, Path Analysis, Revised IA | Expert Forecast, Consensus Range, Assumption Notes | Content groups, Label set, IA hypotheses | Situation Assessment, Decision Loop, Action Updates |
Tagsno overlap | Information architectureNavigationFindability | ForecastingExpertsDecisionStrategy | Information architectureNavigationStructure | DecisionChangeLearningStrategy |