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The Bell Curve: Intelligence and Class Structure in American Life is a 1994 book by the psychologist Richard J. Herrnstein and the 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 ...
The Board of Scientific Affairs (BSA) of the APA had concluded that after the publication of The Bell Curve (1994) and the following debate that there were "serious misunderstandings" and "that there was urgent need for an authoritative report on these issues—one that all sides could use as a basis for discussion".
Many results and methods, such as propagation of uncertainty and least squares [7] parameter fitting, can be derived analytically in explicit form when the relevant variables are normally distributed. A normal distribution is sometimes informally called a bell curve. [8]
The normal distribution, also called the Gaussian or the bell curve. It is ubiquitous in nature and statistics due to the central limit theorem: every variable that can be modelled as a sum of many small independent, identically distributed variables with finite mean and variance is approximately normal.
The Bell Curve: Intelligence and Class Structure in American Life (1994) is a controversial bestseller that Charles Murray wrote with Harvard professor Richard J. Herrnstein. The book's title comes from the bell-shaped normal distribution of IQ scores.
In 1994 the Pioneer-financed journal Mankind Quarterly, [155] of which Roger Pearson was the manager and pseudonymous contributor, had been described by Charles Lane in a review of The Bell Curve in the New York Review of Books as "a notorious journal of 'racial history' founded, and funded, by men who believe in the genetic superiority of the ...
The term "curve" refers to the bell curve, the graphical representation of the probability density of the normal distribution, but this method can be used to achieve any desired distribution of the grades – for example, a uniform distribution.
The Global Bell Curve: Race, IQ and Inequality Worldwide is a book by Lynn, originally published Washington Summit Publishers in 2008. The book's stated purpose is to determine whether the racial and socioeconomic differences in the United States in average IQ, as originally claimed by the 1994 book The Bell Curve , also exist in other countries.