Since the 1970s, a continuing increase in IQ scores in the African-American population is correlated with the increasingly smaller family size.

Question

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Research has shown that there has been a steady increase in IQ scores among African Americans since the 1970s, and this increase has been correlated with a decrease in family size. This correlation suggests that factors such as increased access to education and improved economic opportunities, which may allow individuals to have smaller families, may be contributing to improvements in cognitive abilities.

Since the 1970s, a Continuing Increase in IQ Scores in the African-American