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IQ, The Bell Curve



The Bell Curve is a graph that plots the range of IQ scores of an average population. However, it can be interpreted in many ways, and when the intelligence of the whole human race is in question, the stakes are high.



Critics argue that the way intelligence is measured contains a high level of random variation and therefore it's impossible to generalise it all into one graph. However, belief in the Bell Curve and in the genetic, rather than social, basis for intelligence has unfortunately led to the propagation of many racist ideas.

Evidence to suggest social factors are important in 'intelligence' is strong. The US military tested recruits to assign rank and found that black applicants scored lower than whites. However, analysis of the recruits were found to be due to educational differences; black recruits scored very low until the 1950s, when an increase in score corresponded to improved educational standards for all.

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