If we study identical twins who have been separated at birth and reared apart, we can
A) only test the importance of genetic endowment.
B) learn a lot more about intelligence than we can by studying the influence of the environment.
C) assess the relative contribution of heredity and environment.
D) say very little about the impact of heredity or environment on intelligence.

Question

Quizplus · Accepted Answer

Studying identical twins who have been separated at birth and reared apart allows us to assess the relative contribution of heredity and environment on intelligence. By comparing their similarities and differences, we can estimate the extent to which each factor plays a role in determining intelligence.

If We Study Identical Twins Who Have Been Separated at Birth