As the number and variety of nonshared experiences in a population increases,the heritability coefficient of intelligence will decrease.

Question

Quizplus · Accepted Answer

Nonshared experiences (such as unique life events) can have a significant impact on individual differences in intelligence, and as their number and variety increase, the proportion of variance in intelligence that can be attributed to genetic factors (i.e. heritability coefficient) will decrease. This has been demonstrated in research on identical twins raised in different environments, where the heritability of intelligence is lower than for twins raised in the same environment.

As the Number and Variety of Nonshared Experiences in a Population