The evidence from studies of twins and biological and adoptive siblings indicates that genetic influences explain approximately _____ percent of individual variations in personality traits.
A) 0 to 10
B) 15
C) 25
D) 50

Question

Quizplus · Accepted Answer

Studies of twins and siblings have consistently shown that genetic factors account for about 50% of individual differences in personality traits.

The Evidence from Studies of Twins and Biological and Adoptive