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.

Are we destined to be smart? Twin studies reveal strong genetic roots for IQ, yet up to a third of intelligence is shaped by environment, context, and choice.

There’s both fact and fiction to the rumors that twins run in families and tend to skip a generation. Here’s how heredity impacts your odds of conceiving twins.

"It's awesome and they are so [cute] together." — -- In a happy coincidence, a pair of identical twins have given birth just 20 hours apart in the same hospital. Becky Pistone and her sister, ...

The 61-year-old sisters both got deep plane facelifts on the same day by the same Florida-based plastic surgeon Here they share a candid look at the process — from what sparked their decision to go ...