Adoption studies reveal that __________.
A) adopted children show a significant decline in IQ across middle childhood and adolescence, regardless of rearing conditions
B) children of low-IQ biological mothers adopted at birth by parents who are well above average in income and education do as well as children of high-IQ biological mothers placed in similar adoptive homes
C) genetic factors play a much greater role in IQ than environmental factors but have been overlooked in heritabilities, which typically underestimate genetic influences
D) children of low-IQ biological mothers adopted at birth by parents who are well above average in income and education score above average in IQ during the school years

Question

Quizplus · Accepted Answer

Adoption studies show that children adopted into more advantaged environments often score higher on IQ tests than would be predicted based solely on their biological parents' IQs, indicating the influence of environment.

Adoption Studies Reveal That __________