Intelligence Research & Cognitive Science Blog

Online IQ tests face unique challenges that paper tests never had: cheating with search engines, screen-sharing answers, accessibility barriers, and zero p...

An IQ of 115 means you scored higher than 84% of the population. Use our complete IQ-to-percentile conversion tables to understand exactly where your score...

GPT-4 reportedly scores 155 on verbal IQ tests, but does that mean AI is truly intelligent? Explore how large language models perform on IQ benchmarks, why...

IQ explains only 25-30% of career outcomes. Explore the science of grit, conscientiousness, deliberate practice, social capital, and luck - the factors th...

What counts as a high IQ? Explore the practical implications of scores from 120 to 160+, career outcomes by IQ range, famous high-IQ individuals, and the r...

Visual guide to the IQ bell curve: understand where you fall among score bands from 55 to 145+, what percentiles and standard deviations mean, and how the...

How much of IQ is genetic? Twin studies estimate 40-80% heritability. Explore GWAS findings, gene-environment interaction, epigenetics, and what heritabili...

Review the strongest evidence for educational interventions that raise IQ: Head Start, Perry Preschool, the Abecedarian Project, music training, and biling...

From the Bell Curve debate to race-IQ disputes and test bias allegations, explore why intelligence research remains one of science's most contested fields...

Discover how the P-FIT model, neural efficiency hypothesis, and white matter pathways explain intelligence. Learn what brain imaging reveals about IQ diffe...

From Alfred Binet's 1905 scale for French schoolchildren to AI-powered adaptive testing, trace 120 years of IQ test history through the key milestones, con...

Test anxiety can cost you 5-10 IQ points. IQ scores can trigger identity crises, validation-seeking, or relief. This article examines the psychology of int...