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Interview
Expert / Key-Informant Interview
A researcher conducts loosely structured, in-depth interviews with a small group of internal or external experts or stakeholders, selected for their first-hand knowledge, to gather insight on feasibility, viability, or strategic direction, and to build alignment among decision-makers.
When This Method Fits
Typical duration
Days – Weeks
Typical cost
Low – Medium
Fidelity level
Talk Only
Stage
Discovery, Feasibility
Hypothesis type
Exploratory
Goal type
Find product-market fit, Deepen product-market fit, Validate go-to-market strategy, Maximize societal impact, Drive corporate innovation / R&D, Improve operational efficiency
Randomization
N/A
Study design
Individual case report
Minimum units needed
3
1Best Fit When
Best when you need specialized judgment on feasibility or strategic direction, plus buy-in from the decision-makers involved.