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| Criterion |  UX Research Empathy Mapping |  Product Discovery MVP Test Matrix |  Product Discovery Fake Door Test |  Product Discovery Smoke Test |
|---|---|---|---|---|
Purposedifferent | When a lot is assumed about a target group but little is seen jointly, empathy mapping makes knowledge and gaps directly comparable. The picture also shows which assumptions hold up and where evidence is missing. | When several minimal variants compete to answer the same question, it makes comparing and choosing between them cleaner. It separates problem, assumption, solution, and evidence. The result is captured as a Test Matrix and a Test Plan. | When demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small. | When demand only needs to be roughly verified, it tests interest with minimal effort. It measures whether people would take a next step at all. |
Complexitydifferent | Low | Medium | Medium | Low |
Timedifferent | 30–60 min | 45-75 min | 1-5 Tage | 1-5 Tage |
Participantsdifferent | 4-8 | 2-8 | Nutzertraffic | Nutzertraffic |
Formatdifferent | Workshop | Workshop | Async | Async |
Outputdifferent | Empathy Map, Assumptions List, Research Gaps | Test Matrix, Test Plan | Click Data, Interest Signal, Learning Decision | Interest Metrics, Conversion Signal, Learning Note |
Tagsno overlap | SynthesisQualitativeWorkshop | ExperimentsValidationDiscoveryOptions | ValidationExperimentsDemandDiscovery | ValidationExperimentsDemandGrowth |