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| Criterion |  UX Research User Interviews |  UX Research HEART Framework |  Product Discovery Kano Model |  Product Strategy Counter Metrics |
|---|---|---|---|---|
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. | Helps clarify observations, needs, and patterns in concrete terms. It groups observations into patterns, questions, and decisions. The result is captured as a HEART-GSM table and dashboard. | 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. | When a headline metric could mask side effects, it adds guardrail signals against unwanted outcomes. It connects customer value, product logic, and decision priorities. The result is captured as a counter-metric list and guardrail definitions. |
Complexitydifferent | Low | Medium | Medium | Low |
Timedifferent | 30–60 min per interview | 120 min initial, dann laufend | 1-2 Tage | 30-60 min |
Participantsdifferent | 1 participant per interview | 3-6 | 10-50 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | HEART-GSM Table, Dashboard | Kano Matrix, Feature Classes, Priority Themes | Counter Metric List, Guardrail Definitions |
Tagsno overlap | QualitativeResearchCustomerDiscovery | MetricsUX researchMeasurementSatisfaction | SatisfactionPrioritizationCustomer | MetricsMeasurementStrategyExperiments |