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Line 8: − − == '''Current tests''' === − − Normalized IQ distribution with mean 100 and standard deviation 15. − There are a variety of individually administered IQ tests in use in the English-speaking world. The most commonly used individual IQ test series is the Wechsler Adult Intelligence Scale for adults and the Wechsler Intelligence Scale for Children for school-age test-takers. Other commonly used individual IQ tests (some of which do not label their standard scores as "IQ" scores) include the current versions of the Stanford-Binet Intelligence Scales, Woodcock-Johnson Tests of Cognitive Abilities, the Kaufman Assessment Battery for Children, the Cognitive Assessment System, and the Differential Ability Scales. − − IQ tests that measure intelligence also include: − − # Raven's Progressive Matrices − # Cattell Culture Fair III − # Reynolds Intellectual Assessment Scales − # Thurstone's Primary Mental Abilities − # Kaufman Brief Intelligence Test − # Multidimensional Aptitude Battery II − # Das–Naglieri cognitive assessment system − # [https://www.testkidsiq.com IQ Test for Kids: The gifted Institute] − − IQ scales are ordinally scaled.While one standard deviation is 15 points, and two SDs are 30 points, and so on, this does not imply that mental ability is linearly related to IQ, such that IQ 50 means half the cognitive ability of IQ 100. In particular, IQ points are not percentage points. − − On a related note, this fixed standard deviation means that the proportion of the population who have IQs in a particular range is theoretically fixed, and current Wechsler tests only give Full Scale [https://www.testkidsiq.com/249-2 IQs between 40 and 160]. This should be borne in mind when considering reports of people with much higher IQs.
Undo revision 1486593 by JohnJefferies (talk) Direct copy from Wikipedia: https://en.wikipedia.org/w/index.php?title=Intelligence_quotient&oldid=879114991#Current_tests
Testers classified people as idiots, imbeciles, morons, normal, above average, and geniuses on a numerical scale based on [[mental age]]. For children, dividing the mental age by chronological age produces the intelligence quotient (IQ) used for placement in slow or rapid classes.
Testers classified people as idiots, imbeciles, morons, normal, above average, and geniuses on a numerical scale based on [[mental age]]. For children, dividing the mental age by chronological age produces the intelligence quotient (IQ) used for placement in slow or rapid classes.
The study based on survey data from 702 Nordic research works concludes that a typical neuropsychologist used 9 tests in a standard assessment, and 25 tests overall in their practice. The selection of tests to use has been influenced by nationality, competence level, practice profile, and by attitude toward test selection. Testing patients with psychiatric disorders was associated with more tests.<ref>Egeland J, Løvstad M, Norup A, Nybo T, Persson BA6, Rivera DF, Schanke AK, Sigurdardottir S, Arango-Lasprilla J. (2016). Following international trends while subject to past traditions: neuropsychological test use in the Nordic countries. Clin Neuropsychol. Sep 27:1-22. [https://www.ncbi.nlm.nih.gov/pubmed/27670676]</ref> The average IQ scores for many populations have been rising at an average rate of three points per decade since the early 20th century ([[Flynn Effect|Flynn effect]]). It is not clear if whether "people are getting more and more clever" or just there are differences between past and current testing.<ref name="DickensFlynn2001">
The study based on survey data from 702 Nordic research works concludes that a typical neuropsychologist used 9 tests in a standard assessment, and 25 tests overall in their practice. The selection of tests to use has been influenced by nationality, competence level, practice profile, and by attitude toward test selection. Testing patients with psychiatric disorders was associated with more tests.<ref>Egeland J, Løvstad M, Norup A, Nybo T, Persson BA6, Rivera DF, Schanke AK, Sigurdardottir S, Arango-Lasprilla J. (2016). Following international trends while subject to past traditions: neuropsychological test use in the Nordic countries. Clin Neuropsychol. Sep 27:1-22. [https://www.ncbi.nlm.nih.gov/pubmed/27670676]</ref> The average IQ scores for many populations have been rising at an average rate of three points per decade since the early 20th century ([[Flynn Effect|Flynn effect]]). It is not clear if whether "people are getting more and more clever" or just there are differences between past and current testing.<ref name="DickensFlynn2001">