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Reference Deep-Dives

Comprehensive guides on research methodology, tools, and best practices. Written for practitioners who need depth, not summaries.

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875 Reference Deep-Dives

Reference Deep-Dives Concept Testingconcept-tests

Concept Testing for AI Products: A Methodology Guide

AI product concepts break the CPG concept-testing playbook. Novelty bias, prior-model anchoring, static stimulus failure, and trust dominance distort the data.

May 2026 · 10 min read
Reference Deep-Dives usability-testinguser-research

Figma Prototype Testing: A Practical Workflow Guide

Figma prototypes are the default vehicle for pre-build usability testing, but Figma's native sharing misses reasoning. Here's how to test prototypes properly.

May 2026 · 8 min read
Reference Deep-Dives in-depth-interviewsMethodology

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.

May 2026 · 12 min read
Reference Deep-Dives in-depth-interviewsuser-research

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.

May 2026 · 10 min read
Reference Deep-Dives in-depth-interviewsuser-research

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.

May 2026 · 9 min read
Reference Deep-Dives in-depth-interviewsparticipant-recruitment

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.

May 2026 · 9 min read
Reference Deep-Dives in-depth-interviewsMethodology

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.

May 2026 · 9 min read
Reference Deep-Dives in-depth-interviewsMethodology

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.

May 2026 · 10 min read
Reference Deep-Dives usability-testinguser-research

Mobile App Usability Testing: The 2026 Methodology Guide

Mobile is the primary product surface, yet most usability research still defaults to desktop. Here's how to test native and mobile-web flows on real devices.

May 2026 · 9 min read
Reference Deep-Dives usability-testinguser-research

Moderated vs. Unmoderated Usability Testing: The Methodology Decision

Moderated usability testing captures reasoning but caps at 5-8 sessions. Unmoderated scales but loses the why. Here's how to pick — and how to break the tradeoff.

May 2026 · 9 min read
Reference Deep-Dives user-researchMethodology

Qualitative vs Quantitative Research: A Methodology Decision Guide

Qualitative captures reasoning; quantitative captures behavior. Pick the wrong one and your findings answer the wrong question. Here's how to route the decision.

May 2026 · 11 min read
Reference Deep-Dives usability-testinguser-research

Remote Usability Testing: A Complete Methodology Guide

Remote usability testing replaced in-person studies as default, but unmoderated tools miss reasoning. Here's how AI-moderated remote testing fixes that.

May 2026 · 6 min read
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