The best reason to be cautious about attributing all the personality similarities of separately raised identical twins to shared genes is that
A) home environments have less impact on personality than does peer pressure.
B) similar appearances often evoke similar responses from others.
C) infant temperaments have a strong impact on personality development.
D) adopted children's personalities are highly similar to those of their adoptive parents.

Question

Quizplus · Accepted Answer

Identical twins, even when raised separately, often share strikingly similar appearances. This similarity in appearance can lead to them being treated in similar ways by others, which can in turn influence their personalities. This phenomenon, known as the "environmental" or "nurture" effect, suggests that the responses and interactions twins receive from their environment based on their looks can contribute to personality development, alongside genetic factors. This is why attributing personality similarities solely to genetics without considering the impact of environmental factors, such as the way others respond to them, can be overly simplistic.

The Best Reason to Be Cautious About Attributing All the Personality