Human Growth and Development / Unit 7 HGD 0927 short lesson, about 20 seconds
Genes and Intelligence
Captions available
The idea
Twin and adoption studies show genetic influence on intelligence, and genome-wide studies point to many genetic variants, each with a small effect.
In practice
Twins and adopted children compared with biological and adoptive families to separate genes from environment.
Where people slip
There is no single intelligence gene, and heritability describes variation across a population, not how much of one child's ability is inherited.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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