AP PSYCHOLOGY

Detailed explanation-1: -Heritability refers to the extent to which variations and deviations among group members can be attributed to gene influence.

Detailed explanation-2: -Heritability is a measure of how well differences in people’s genes account for differences in their traits. Traits can include characteristics such as height, eye color, and intelligence, as well as disorders like schizophrenia and autism spectrum disorder.

Detailed explanation-3: -(i) The heritability of intelligence increases from about 20% in infancy to perhaps 80% in later adulthood. (ii) Intelligence captures genetic effects on diverse cognitive and learning abilities, which correlate phenotypically about 0.30 on average but correlate genetically about 0.60 or higher.

Detailed explanation-4: -Evidence of Genetic Influences on Intelligence Studies show that IQ scores of identical twins may be more similar than those of fraternal twins. Siblings who were raised together in the same environment have more similar IQs than those of adopted children who were brought up in the same household.

Detailed explanation-5: -Genes make a substantial difference, but they are not the whole story. They account for about half of all differences in intelligence among people, so half is not caused by genetic differences, which provides strong support for the importance of environmental factors.