Interview frequency: …
Short answer
Put notes and quotes on individual cards, then group them bottom-up by relationships and shared patterns to form major themes and insights.
Explanation
Start by collecting hundreds of individual notes from user interviews and writing each idea on a separate card. The team silently groups similar cards at first to avoid discussion bias. After grouping, give each theme a descriptive name, then formulate insights that explain the underlying behavior and turn them into design opportunities in "How Might We...?" format.
Common mistakes
- Pre-sorting notes into predefined (top-down) categories, hiding new and unexpected patterns.
- Only summarizing what users said without probing into their unspoken psychological motivations.