The Heritability Coefficient of Extraversion Is Approximately

The heritability coefficient of extraversion is approximately .5. This means that:

A) a child psychologist can predict with 50 percent accuracy a client's extraversion level if she knows the extraversion levels of the child's parents.
B) children inherit 50 percent of the tendencies toward extraversion or introversion from their mother, and 50 percent from their father.
C) in any given child, half of extraversion is caused by genetic factors and half is caused by the environment.
D) in a large group of children, 50 percent of the variability in extraversion scores would be due to genetic factors.