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| Criterion |  UX Research Tree Testing |  Facilitation Nominal Group Technique |  UX Research Card Sorting |
|---|---|---|---|
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 loud voices could dominate a round, Nominal Group Technique protects individual thinking time from group effects. It collects ideas separately first and only then enables shared weighting. | 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 | Medium | Medium | Low |
Timedifferent | 1-2 Tage | 60-120 min | 20-45 min |
Participantsdifferent | Based on research question | 5-12 | Based on research question |
Formatdifferent | Async | Workshop | Workshop + async |
Outputdifferent | Findability Metrics, Path Analysis, Revised IA | Ranked Ideas, Clarified Options, Group Priority | Content groups, Label set, IA hypotheses |
Tagsno overlap | Information architectureNavigationFindability | FacilitationPrioritizationVotingInclusion | Information architectureNavigationStructure |
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