Which is a common criticism of twin studies?

Question

Quizplus · Accepted Answer

One of the most common criticisms of twin studies is the assumption that the environment has less of an influence on the similarity being studied in twins than genetics. This is often referred to as the "equal environments assumption," which assumes that environmental factors affecting the similarities and differences between twins are no different from those affecting siblings. This assumption is often criticized because twins may share more similar environments simply because they are twins and are treated more similarly by parents or society.

Which Is a Common Criticism of Twin Studies