In the book The Bell Curve,Richard J.Herrnstein and Charles Murray present their findings regarding the relationship between IQ and other social factors.Their conclusions were controversial because:
A) when a psychologist and sociologist collaborate on a research project, the results naturally will be controversial because each scholar approaches the problem differently
B) the authors drew conclusions about the intelligence of all North Americans on their findings from studying the intelligence of Native Americans and Native Canadians
C) the authors contended that blacks in the United States have higher intelligence than whites, which would be apparent if the IQ tests were changed to accurately measure intelligence
D) the authors focused strictly on the sociological factors that influence IQ and ignored the biological or hereditary factors
E) the authors proclaimed that black Americans had an inferior intelligence because of genetic differences between black and white Americans.

Question

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The authors' contentious conclusion in The Bell Curve was that black Americans had inferior intelligence due to genetic differences between black and white Americans. This sparked controversy and accusations of racism and incorrect reasoning.

In the Book the Bell Curve,Richard J