Suppose identical twins raised apart have a correlation of .40 on a measure of some aspect of personality,and identical twins raised together have a correlation of .60 on this same measure.From these data,what can we logically conclude about this trait?

Question

Quizplus · Accepted Answer

The fact that identical twins raised apart have a lower correlation than identical twins raised together suggests that nonshared environment (i.e., the experiences that differ between the two twins, such as different friends or schools) has an impact on this aspect of personality. If shared environment (i.e., experiences that are the same between the twins, such as their family upbringing) were the primary factor, we would expect the correlation to be closer to 1.00 for both sets of twins. Therefore, choice A is the best answer.

Suppose Identical Twins Raised Apart Have a Correlation of