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| Criterion |  Product Discovery Kano Model |  Operations Ivy Lee Method |  UX Research Personas |  UX Research User Interviews |
|---|---|---|---|---|
Purposedifferent | When features need to be distinguished by their effect on satisfaction, it makes expectations and surprises comparable. It separates basic needs, performance contribution, and delight. | With a restless workday full of too many open items, the method creates radical simplicity. It directs attention to a short sequence instead of a broad, still-open field. | When target groups stay too vague and teams talk about the same people differently, personas create a shared, solid picture of usage. Condensed profiles make needs, contexts, and differences tangible enough for decisions. | 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. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | 1-2 Tage | 5-10 min daily | 1-3 Tage | 30–60 min per interview |
Participantsdifferent | 10-50 | 1 | Internes Team | 1 participant per interview |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | Kano Matrix, Feature Classes, Priority Themes | Daily Priority List, Completion Notes | Persona Profiles, Needs Summary, Scenario Notes | Interview Notes, Themes, Insight Summary |
Tagsno overlap | SatisfactionPrioritizationCustomer | PrioritizationProductivityExecution | ResearchCustomerSynthesis | QualitativeResearchCustomerDiscovery |