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| Criterion |  Innovation Design Thinking |  UX Research Usability Testing |  UX Research Surveys |  Product Discovery Solution Interview |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | 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. |
Complexitydifferent | High | Medium | Medium | Medium |
Timedifferent | 1 Tag bis mehrere Wochen | 1-2 h je Session | 3-14 Tage | 30-60 min je Interview |
Participantsdifferent | 4-10 | Based on research question | 50+ | 5-10 Interviews |
Formatdifferent | Workshop | Workshop + async | Async | Workshop + async |
Outputdifferent | Problem Statement, Prototype, Test Learnings | Usability Issues, Severity List, Recommendations | Survey Results, Charts, Segment Insights | Solution Feedback, Objection List, Validation Notes |
Tagsno overlap | InnovationPrototypeResearch | ValidationUXPrototype | QuantitativeResearchValidation | ValidationInterviewsPrototype |