Here is a quote from the study: > However, for intelligence, heritability increases linearly, from (approximately) 20% in infancy to 40% in adolescence, and to

Here is a quote from the study: > However, for intelligence, heritability increases linearly, from (approximately) 20% in infancy to 40% in adolescence, and to 60% in adulthood. Some evidence suggests that heritability might increase to as much as 80% in later adulthood but then decline to about 60% after age 80. It does not corroborate the claim "Intelligence is largely (~70-80% of variance) inherited".