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In this video I consider racial differences in average IQ scores. This controversy reached a peak with the publication of "The Bell Curve" by Richard Herrnstein and Charles Murray in 1994. This led to publication of several papers on race and IQ stating that IQ is considered valid, reliable, and heritable, and that while group differences exist, the causes of these differences are not clearly understood. While concepts of race, environmental and societal forces, and genes may or may not all contribute to observed differences between groups, it's important to remember that knowing an individual's group membership doesn't tell one anything about that individual's IQ score.

The Bell Curve Explained (Charles Murray): http://www.aei.org/spotlight/the-bell-curve-explained/

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