Which is a twin/adoption study?

Question

Quizplus · Accepted Answer

A twin/adoption study involves comparing the traits or behaviors of individuals who are twins (either identical or fraternal) or who have been adopted into different families. Option A describes a classic example of a twin/adoption study, as the researcher is comparing the personalities of identical twins who were separated at birth and adopted into different families, allowing the researcher to examine the relative contributions of genetics and environment to personality development. Option B is a related but slightly different type of study, as it involves comparing the personality traits of an adopted child with those of their biological and adoptive parents, rather than comparing twins. Options C and D do not involve a comparison between twins or between twins and non-twins, so they are not examples of twin/adoption studies.

Which Is a Twin/adoption Study