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| Criterion |  Product Discovery Solution Interview |  UX Research Card Sorting |  UX Research Surveys |  Innovation Design Thinking |
|---|---|---|---|---|
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 topic needs to be validated broadly and many people can answer the same question, surveys gather structured feedback in a scalable form. Answers become comparable and segmentable instead of remaining merely anecdotal. | For complex user problems with an uncertain cause, the method connects observation, interpretation, and experiment into a learning cycle. It keeps the focus on real needs and avoids premature solution language. This produces robust decisions for product and service. |
Complexitydifferent | Medium | Low | Medium | High |
Timedifferent | 30-60 min je Interview | 20-45 min | 3-14 Tage | 1 Tag bis mehrere Wochen |
Participantsdifferent | 5-10 Interviews | Based on research question | 50+ | 4-10 |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Content groups, Label set, IA hypotheses | Survey Results, Charts, Segment Insights | Problem Statement, Prototype, Test Learnings |
Tagsno overlap | ValidationInterviewsPrototype | Information architectureNavigationStructure | QuantitativeResearchValidation | InnovationPrototypeResearch |