Identical twins with very different IQs

A PAIR of identical twins separated as infants were found to have substantially different IQs as adults.

Born in South Korea in 1974, one got lost at a market aged two and was later adopted by a US couple. They were reunited in 2018 when the US twin submitted DNA to a South Korean database.

An IQ test showed the twin raised in the US scored 16 points lower than her Korean sibling, contradicting studies that say differences among twins are never more than seven points. The journal Personality and Individual Differences said the US sister raised had suffered three concussions which may have influenced her cognitive ability.