Aside from twins, another group that has been studied for genetic factors in the appearance of psychological traits and disorders are ______.
A) children from small towns
B) narrow religious groups
C) adoptees
D) children with mental retardation

Question

Quizplus · Accepted Answer

Adoptees are often studied to examine the role of genetics versus environment in the development of psychological traits and disorders. Since they may have different genetics from their adoptive parents, but may be raised in a similar environment, researchers can compare the rates of certain disorders in both biological and adoptive families to gain insight into the relative contributions of genetics and environment.

Aside from Twins, Another Group That Has Been Studied for Genetic