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| Criterion |  Product Discovery Solution Interview |  UX Research Usability Testing |  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 a product is built but people get stuck on tasks, usability testing shows the friction at concrete points. Observed use instead of self-report makes visible where orientation, understanding, or interaction breaks down. | 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 | Medium | Medium | High |
Timedifferent | 30-60 min je Interview | 1-2 h je Session | 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 | Usability Issues, Severity List, Recommendations | Survey Results, Charts, Segment Insights | Problem Statement, Prototype, Test Learnings |
Tagsno overlap | ValidationInterviewsPrototype | ValidationUXPrototype | QuantitativeResearchValidation | InnovationPrototypeResearch |