Human Intelligence and IQ Research

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About this site

Last updated: August 2026
This site presents scientific research on human intelligence and IQ, including their measurement, biological and genetic foundations, evolution, and variation across individuals and populations. It summarizes recent studies and data from psychometrics, behavioral genetics, neuroscience, and related fields, with an emphasis on clarity, evidence, and direct links to scientific sources.

Latest Updates

📰 Nathan Cofnas remains at Ghent University after U.S. intervention against Belgian authoritarianism (AUG 2026)
🎯 Why Intelligence Research is Targeted (NOV 2025)
🧠 National IQs Update (FEB 2024)

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Editorial approach

The site prioritizes peer-reviewed research, major reviews, meta-analyses, and primary scientific sources where available. Different findings and interpretations are presented when the literature is mixed, with links to original sources whenever possible.

Featured Presentation: Race Differences in Intelligence

Download: PowerPoint (30 MB) — April 2025.

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Essential Documents

📄 Race Differences in Intelligence: An Evolutionary Analysis (2006) by Richard Lynn (PDF)