In two investigations, African-American children adopted into economically well-off white homes during the first year of life __________.
A) scored low on intelligence tests during middle childhood
B) attained mean IQs of 110 and 117 by middle childhood
C) scored mean IQs of below 95 in middle childhood
D) showed gains in IQ in early childhood, which dropped by adolescence
Question 2
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
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