In-Depth Interviews Reference Guides
IDI Coding and Scoring: The Qual-to-Quant Bridge
How to code in-depth interview transcripts into structured themes, run intercoder reliability checks, and bridge from rich narrative to defensible findings.
IDI Discussion Guide Template: Sections, Sample Prompts, Mistakes
A practical IDI discussion guide template: six sections, sample prompts per section, common mistakes that wreck quality, and a copy-able structure.
IDI Moderator Training & Consistency: The Methodology Tax
Moderator variance contaminates IDI programs at scale. Training closes part of the gap; AI moderation closes the rest. Here's how to think about it.
IDI Recruitment Screener: A Practical Methodology Guide
How to screen for IDI recruitment quality, not just demographic fit. Behavioral qualifiers, articulation tests, and a copy-able 6-section screener.
IDI Sample Size and Saturation: How Many In-Depth Interviews Do You Need?
Textbook IDI sample sizes (5-8, 12, 16-24) were derived under expensive-interview cost regimes. Here's how saturation changes when each interview is cheap.
Laddering Technique in In-Depth Interviews: A Methodology Guide
Laddering is the structured probing technique that turns surface answers into identity-level reasoning. Here's how it works, and how AI moderation runs it.
What Is an In-Depth Interview? A Practitioner's Methodology Guide
In-depth interviews surface the reasoning surveys miss. A practitioner's guide to IDI methodology, laddering, sampling, and why the economics changed.