IQ Test Articles & Guides
Deep-dive guides on IQ scores, percentiles, cognitive testing, and what your results actually mean. Based on established psychometric research.
IQ vs EQ: What's the Actual Difference?
IQ measures cognitive ability; EQ measures emotional and social skill. They correlate only weakly - here's what each one actually predicts, and which matters more for what.
Average IQ by Country, Age, and Profession: What the Data Actually Says
A careful look at average IQ across countries, age groups, and professions - including which of these comparisons are methodologically sound and which are internet folklore.
How Accurate Are Online IQ Tests?
Well-designed online IQ tests estimate your score within about 10-15 points of a clinical assessment. Badly designed ones are essentially random. Here's how to tell the difference.
What Is a Good IQ Score? A Complete Breakdown by Percentile
A good IQ score is typically 110 or above - putting you in the top 25% of the population. Here's the full percentile breakdown, what each IQ range means, and where you rank.