The intelligence quotient (IQ) is a standardized measure of cognition, or your ability to think, understand, reason, learn, and remember. By design, the average IQ score is 100. Higher IQ scores are ...

Reviewed by Amy Morin, LCSW Key Takeaways The term "genius" is no longer used in IQ classifications, but scores above 140 are ...

But what does IQ truly measure, and why do some countries consistently top the list? Let’s explore the science behind this. IQ is typically measured using a series of standardised tests. These tests ...