Changes

in their infancy. Ideas such as [[eugenics]] still had currency, and intelligence tests were used to weed out so-called "defectives".  

in their infancy. Ideas such as [[eugenics]] still had currency, and intelligence tests were used to weed out so-called "defectives".  

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">