Which of the following is a limitation of both family studies and twin studies of schizophrenia?

Question

Quizplus · Accepted Answer

Both family studies and twin studies suffer from the limitation of not being able to fully account for the role of shared-environmental factors in the development of schizophrenia. Family studies are limited in that they cannot distinguish between genetic and environmental influences within a family, while twin studies assume that environmental effects on twins are independent, which may not always be the case. Both methods do, however, account for the possibility of genetic influences on the disorder. Choices A, B, and D are incorrect because both family and twin studies do not exclusively employ self-report measures, use a clinically valid definition of schizophrenia, and can distinguish between various subtypes of the disorder.

Which of the Following Is a Limitation of Both Family