What does it mean?
A user interview is a conversation designed to understand behaviour and experience. Open questions about recent real events tend to reveal more than asking people to predict what they would do.
Make it concrete.
Illustrative example: Instead of asking “Would you use a meal-planning app?”, ask someone to walk you through the last time they planned meals for a busy week.
A common mistake.
Leading with “Wouldn’t this feature be helpful?” instead of exploring actual behaviour.
When should you use it?
During discovery, especially when your understanding of the problem is incomplete.
Explore the source.
Nielsen Norman Group — User Interviews ↗This is a reference for further learning, not an endorsement or a verbatim quotation.