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| Criterion |  UX Research User Interviews |  Product Discovery Wizard of Oz Test |  Product Discovery Problem Interview |  Product Discovery Solution Interview |
|---|---|---|---|---|
Purposedifferent | When teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | When a new experience would still be too expensive to automate for real, it simulates the outcome behind the scenes. It checks user reaction and value before the technology disappears. | 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. | 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 | Low | High | Medium | Medium |
Timedifferent | 30–60 min per interview | 2-10 Tage | 30-60 min je Interview | 30-60 min je Interview |
Participantsdifferent | 1 participant per interview | 5-20 Nutzer | 5-12 Interviews | 5-10 Interviews |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Prototype Learnings, Manual Effort Notes, Risk List | Problem Evidence, Risk Notes, Customer Segments | Solution Feedback, Objection List, Validation Notes |
Tagsno overlap | QualitativeResearchCustomerDiscovery | PrototypeValidationMVP | DiscoveryInterviewsValidation | ValidationInterviewsPrototype |