In studies of families with one biological child and one adopted child, the results concluded that
A)the biological child had an IQ similar to the mother's IQ, but the adopted child did not.
B)the adopted child's IQ was almost identical to his or her biological mother's IQ, although reared away from her.
C)both the biological and adopted child had IQs similar to the mother that was rearing them.
D)the adopted child's IQ was always significantly below the IQ of both his or her adopted mother and adopted sibling.

Question

Quizplus · Accepted Answer

Both the biological and adopted child had IQs similar to the mother that was rearing them. This is because the environment in which a child is raised has a significant impact on their IQ.

In Studies of Families with One Biological Child and One