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| Criterion |  Product Discovery Solution Interview |  Innovation Double Diamond |  UX Research First-click Testing |  Product Discovery Problem Interview |
|---|---|---|---|---|
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. | For complex problems with a fuzzy situation, the method cleanly separates search space and decision. It first creates breadth in understanding and then focus in elaboration. This brings open questions, problem definition, and solution path into a traceable movement. | When users immediately turn the wrong way on a screen or wireframe, first click testing checks initial orientation at high speed. The first click shows early whether expectation, labeling, and wayfinding fit together. | When the picture of the problem still needs to become solid, it asks about real situations and consequences. It separates genuine suffering from mere interest in a solution. |
Complexitydifferent | Medium | Medium | Low | Medium |
Timedifferent | 30-60 min je Interview | Wochen bis Monate | 1-2 Tage | 30-60 min je Interview |
Participantsdifferent | 5-10 Interviews | 3-12 | 10-30 | 5-12 Interviews |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Problem Statement, Solution Options, Prototypes, Deliverables per Phase | Click Heatmap, Success Rate, Design Recommendations | Problem Evidence, Risk Notes, Customer Segments |
Tagsno overlap | ValidationInterviewsPrototype | ProcessDivergenceInnovation | UXNavigationFindabilityValidation | DiscoveryInterviewsValidation |