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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 book's particular focus is the book The Bell Curve, but to some extent this focus is to illustrate a doctrine that the authors attempt to refute: . At its base is a philosophy ages old: Human misery is natural and beyond human re-demption; inequality is fated; and people deserve, by virtue of their native talents, the positions they have in society.
Rogers ' bell curve. The technology adoption lifecycle is a sociological model that describes the adoption or acceptance of a new product or innovation, according to the demographic and psychological characteristics of defined adopter groups. The process of adoption over time is typically illustrated as a classical normal distribution or
[1] [2] Jensen was known for his work in psychometrics and differential psychology, the study of how and why individuals differ behaviorally from one another. He was a major proponent of the hereditarian position in the nature and nurture debate, the position that genetics play a significant role in behavioral traits, such as intelligence and ...
The Bell Curve also led to critical responses in a statement titled "Intelligence: Knowns and Unknowns" of the American Psychological Association and in several books, including The Bell Curve Debate (1995), Inequality by Design (1996) and a second edition of The Mismeasure of Man (1996) by Stephen Jay Gould. [22] [23]
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.
The liability-threshold model is frequently employed in medicine and genetics to model risk factors contributing to disease. In a genetic context, the variables are all the genes and different environmental conditions, which protect against or increase the risk of a disease, and the threshold z is the biological limit past which disease develops.
The article, supporting the conclusions of The Bell Curve, was later republished in an expanded version in the journal Intelligence. [147] [148] [149] The editorial included the statements: [150] [151] Genetics plays a bigger role than environment in creating IQ differences among individuals ...