About BrainDex

We believe everyone deserves access to clear, accurate information about intelligence, personality, and cognitive science — without the jargon.

Our Mission

BrainDex is an independent research publication focused on making IQ science and personality psychology accessible to a general audience. We publish well-researched, easy-to-read articles on topics ranging from IQ scores by country to MBTI personality types, brain health strategies, and cognitive development.

Every article on our site is written by the BrainDex Editorial Team — a team dedicated to synthesising the latest research in intelligence and personality science.

Editorial Standards

All BrainDex articles are:

• Research-backed: Based on peer-reviewed studies, published datasets, and established scientific literature.
• Clearly sourced: We reference the academic and empirical foundations behind every major claim.
• Freely accessible: No paywalls, no subscriptions. All content is free to read.
• Regularly updated: We review and update articles as new research emerges.

What We Cover

• IQ by Country: How average IQ scores vary globally and what educational and socioeconomic factors drive them.
• MBTI & 16 Personalities: Complete profiles of all 16 personality types, cognitive functions, and compatibility.
• Celebrity IQ: Exploring the cognitive profiles of famous scientists, leaders, athletes, and entertainers.
• Brain Health: Science-backed strategies for memory, focus, and cognitive longevity.
• IQ Science: The research, history, and debates behind intelligence testing and the concept of IQ.
• Improve Your IQ: Practical, evidence-based methods to sharpen your mind.
• Personality Science: Big Five, Enneagram, attachment styles, and beyond.

Our Commitment to Accuracy

IQ and personality research is a nuanced field. We are committed to representing findings accurately, contextualizing data appropriately, and noting where scientific consensus is still developing. If you spot an error or have a correction, please contact us.

Want to test your own IQ or discover your personality type? Visit our partner site BrainDex.me for free, scientifically-designed assessments.