Current Wentzville, Missouri Population, Demographics and stats in 2016, 2017.
David Wechsler. developed an intelligence test for adults in the US (WAIS), an intelligence test for children (WISC, which has been revised and is now the WISC-IV), and an intelligence test for preschool (WPPSI).
The abbreviation IQ was coined by the psychologist William Stern for the German term Intelligenzquotient, his term for a scoring method for intelligence tests at University of WrocÅaw he advocated in a 1912 book.