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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]
Ulric Neisser estimated that using the IQ values of 1997, the average IQ of the United States in 1932, according to the first Stanford–Binet Intelligence Scales standardization sample, was 80. Neisser states that "Hardly any of them would have scored 'very superior', but nearly one-quarter would have appeared to be 'deficient.'"
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.
Herrnstein and Murray, in their best-selling 1994 book The Bell Curve, argued that the average genotypic IQ of the United States was declining due to both dysgenetic fertility and large scale immigration of groups with ex hypothesi lower average IQ than the previous population mean. [21] [c]
A Daily News analysis of vaccination data and IQ averages in each state reveals new patterns among anti- and pro-vaxxers, with five of the 10 states with the lowest IQs landing among the 10 states ...
For comparison, the average IQ is around 100. Albert Einstein and Stephen Hawking ranked close to 160. ... the same way it makes us feel better about the state of the world to laugh about Trump ...
The Supreme Court of the United States has utilized IQ test results during the sentencing phase of some criminal proceedings. The Supreme Court case of Atkins v. Virginia , decided June 20, 2002, [ 17 ] held that executions of mentally challenged criminals are " cruel and unusual punishments " prohibited by the Eighth Amendment .
The researchers also pooled together data on nearly 21,000 children from 59 studies that reported average IQ scores. ... broader public health implications of water fluoridation in the United ...