Who has the highest IQ in history? One answer would be: a 10-year-old girl from Missouri. In 1956, according to lore, she took a version of the Stanford-Binet IQ test and recorded a mental age of 22 ...

A new study reveals that cognitive ability, not just hearing, plays a key role in how well people process speech in noisy ...

Research has shown the potential for racial and class bias in IQ testing, so schools are slowly moving away from the practice — but not fast enough for many parents and researchers. Credit: Camilla ...

Adding iodine to salt had a large positive impact on IQ in deficient parts of the United States.