For more than a century, scientists have debated whether intelligence is mostly a product of nature or nurture. Identical ...

There’s a common assumption that intelligence is largely determined by genetics. After all, previously published studies ...

Identical twins who were raised apart may have IQ differences similar to those of total strangers, according to new research.

A new analysis of studies spanning the last century finds that differences in schooling appear to explain a large portion of ...

New research suggests that education can raise IQ by up to 15 points—even among identical twins—challenging determinism and revealing intelligence to be more malleable than we once believed.