Adoption studies focusing on the heritability of traits have _____________.

A) disputed the findings of twin studies
B) been attacked for ethical reasons
C) confirmed what twin studies have shown
D) shown that twin studies have methods that need to be reexamined

Adoption Studies

Research methods in behavioral genetics that compare the traits of adopted children to those of their adoptive and biological parents to understand genetic and environmental influences.

Heritability of Traits

The proportion of variation in traits among individuals that can be attributed to genetic factors.

Twin Studies

An approach in psychology and genetics to quantify the relative contributions of heredity and environment to individual variances in traits and disorders by analyzing twins.