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| Criterion |  Product Discovery Solution Interview |  UX Research Card Sorting |  UX Research Tree Testing |  Innovation Design Sprint |
|---|---|---|---|---|
Purposedifferent | When a solution idea is already on the table, it checks how it is understood and evaluated. It looks for resonance, objections, and missing fit early in the conversation. | 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. | 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 the product question is unclear and time pressure is high, the method takes a team from an open idea to a testable solution. It connects problem understanding, decision, and learning in one compact format, lowering the risk of spending a lot of energy on a mere guess. |
Complexitydifferent | Medium | Low | Medium | High |
Timedifferent | 30-60 min je Interview | 20-45 min | 1-2 Tage | 4-5 Tage |
Participantsdifferent | 5-10 Interviews | Based on research question | Based on research question | 5-8 |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Content groups, Label set, IA hypotheses | Findability Metrics, Path Analysis, Revised IA | Prototype, Test Findings, Decision Rationale |
Tagsno overlap | ValidationInterviewsPrototype | Information architectureNavigationStructure | Information architectureNavigationFindability | Design sprintPrototypeValidationInnovation |