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Early twin studies of adult individuals have found a heritability of IQ between 57% and 73%, [7] with some recent studies showing heritability for IQ as high as 80%. [8] IQ goes from being weakly correlated with genetics for children, to being strongly correlated with genetics for late teens and adults.
The highest reported standard score for most IQ tests is IQ 160, approximately the 99.997th percentile. [111] ... Heritability of IQ; Creativity and intelligence;
An intelligence quotient (IQ) is a total score derived from a set of standardized tests or subtests designed to assess human intelligence. [1] Originally, IQ was a score obtained by dividing a person's mental age score, obtained by administering an intelligence test, by the person's chronological age, both expressed in terms of years and months.
In the United States, the increase was continuous and approximately linear from the earliest years of testing to about 1998 when the gains stopped and some tests even showed decreasing test scores. For example, the average scores of black people on some IQ tests in 1995 were the same as the scores of white people in 1945. [70]
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 ...
Although a high IQ score is not the sole indicator of giftedness, usually if a student has a very high IQ, that is a significant indicator of high academic potential. [30] Because of this consideration, if a student scores highly on an IQ test, but performs at an average or below-average level academically, school officials may think that this ...