Adoption Studies Provide a Rich Setting for Discriminating Between the Contributions

Multiple Choice

Adoption studies provide a rich setting for discriminating between the contributions of genetics and environment on behavior. In such a study, which of the following would indicate an environmental influence on behavior?

A) An adoptive parent selects a child to adopt who is similar in temperament.
B) An adopted child is more similar in behavior to a biological parent than to an adoptive parent.
C) The adopted child and the adoptive parent are similar in a behavioral trait.
D) An adoptee in a selective placement is similar in behavior to the adoptive parent.