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| Criterion |  UX Research User Interviews |  Operations Ivy Lee Method |  Product Discovery Opportunity Interview |  Product Discovery Kano Model |
|---|---|---|---|---|
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. | 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 opportunities are still hidden behind signals of need, it structures conversations around needs and obstacles. It looks for patterns that lead to new product opportunities. | 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. |
Complexitydifferent | Low | Low | Medium | Medium |
Timedifferent | 30–60 min per interview | 5-10 min daily | 30-60 min je Interview | 1-2 Tage |
Participantsdifferent | 1 participant per interview | 1 | 5-12 Interviews | 10-50 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Daily Priority List, Completion Notes | Interview Notes, Opportunity Themes, Customer Quotes | Kano Matrix, Feature Classes, Priority Themes |
Tagsno overlap | QualitativeResearchCustomerDiscovery | PrioritizationProductivityExecution | DiscoveryInterviewsOpportunityCustomer | SatisfactionPrioritizationCustomer |