A Northwestern University study shows a decline in three key intelligence testing categories—a tangible example of what is called the Reverse Flynn Effect. Leading up to the 1990s, IQ scores were ...

American IQ test scores have dropped during a recent 13-year period, a remarkable finding that runs counter to the well-established trend of increasing IQ scores throughout much of the 20th century.

A recent global IQ ranking placed Bangladesh near the bottom. But it’s not about whether Bangladeshis are “smart enough,” the problem lies in how intelligence is misread as a fixed national trait rath ...

How well can genetics predict intelligence? A large-scale study published in Intelligence explores the power of polygenic scores to predict intelligence, finding that these genetic estimates ...