Richard Herrnstein and Charles Murray's 1994 book,The Bell Curve,argues that
A) IQ variations are largely determined by differences in environment.
B) heredity contributes substantially to individual and SES differences in IQ.
C) ethnic and social class differences in IQ are unfounded.
D) IQ shows significant fluctuations over the lifespan.

Question

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Herrnstein and Murray argue that heredity contributes substantially to individual and socioeconomic differences in IQ. They propose that cognitive ability is to a large extent inherited genetically, with as much as 60% of IQ variation being attributable to genetic factors. The book's controversial claims about race and intelligence have been widely criticized.

Richard Herrnstein and Charles Murray's 1994 Book,The Bell Curve,argues That