Saying that the heritability of intelligence is 70 percent would mean that
A) 70 percent of a person's intelligence is due to heredity.
B) 70 percent of the variability of intelligence scores in a group is accounted for by genetic variation.
C) 30 percent of a person's intelligence is due to environmental factors.
D) the correlation in IQ scores between identical twins should be approximately +0.70.

Question

Quizplus · Accepted Answer

Heritability refers to the proportion of variance in a trait that is due to genetic variation within a particular population. A heritability of 70 percent would mean that 70 percent of the variability of intelligence scores in a group is accounted for by genetic variation. It does not mean that any one individual's intelligence is 70 percent due to genetics. The heritability estimate also does not specify the specific genetic and environmental factors that contribute to intelligence.

Saying That the Heritability of Intelligence Is 70 Percent Would