In seeking to answer the question "How much influence do environment and heredity have on behavior?" a psychologist would choose which of the following scenarios as the most appropriate design?
A) siblings raised together
B) fraternal twins raised apart
C) identical twins raised together
D) identical twins raised apart

Question

Quizplus · Accepted Answer

Identical twins raised apart (D) provide the most controlled natural experiment for disentangling the effects of environment and heredity on behavior. Since identical twins share the same genetic makeup, any differences in their behavior when raised in different environments can be attributed more directly to environmental influences rather than genetic factors.

In Seeking to Answer the Question "How Much Influence Do