One problem with adoption studies is that the homes in which twins are placed
A) are so very different that comparisons cannot be made.
B) are often very similar because adoptive families are similar in important ways.
C) are highly specialized for adoptive parenting.
D) allow the same genetic influences to emerge.

Question

Quizplus · Accepted Answer

Adoptive families are often chosen based on similarities in socio-economic status, religion, and other important factors. As a result, the homes in which twins are placed are often very similar to each other, limiting the ability to separate the effects of genetics and environment on behavior.

One Problem with Adoption Studies Is That the Homes in Which