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Concept
The Bell Curve
Summary
The Bell Curve: Intelligence and Class Structure in American Life is a 1994 book by psychologist Richard J. Herrnstein and political scientist Charles Murray, in which the authors argue that human intelligence is substantially influenced by both inherited and environmental factors and that it is a better predictor of many personal outcomes, including financial income, job performance, birth out of wedlock, and involvement in crime than are an individual's parental socioeconomic status. They also argue that those with high intelligence, the "cognitive elite", are becoming separated from those of average and below-average intelligence, and that this separation is a source of social division within the United States.
The book has been, and remains, highly controversial, especially where the authors discussed purported connections between race and intelligence and suggested policy implications based on these purported connections. The authors claimed that average intelligence quotient (IQ) differences between racial and ethnic groups are at least partly genetic in origin, a view that is now considered discredited by mainstream science.
Shortly after its publication, many people rallied both in criticism and in defense of the book. A number of critical texts were written in response to it. Several criticisms were collected in the book The Bell Curve Debate.
The Bell Curve, published in 1994, was written by Richard Herrnstein and Charles Murray to explain the variations in intelligence in American society, warn of some consequences of that variation, and propose social policies for mitigating the worst of the consequences. The book's title comes from the bell-shaped normal distribution of intelligence quotient (IQ) scores in a population.
The book starts with an introduction that appraises the history of the concept of intelligence from Francis Galton to modern times. Spearman's introduction of the general factor of intelligence and other early advances in research on intelligence are discussed along with a consideration of links between intelligence testing and racial politics.
Official source
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