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 first Intelligence Quotient (IQ) test http://geniusiq-drazhardaud.blogspot.... is attributed to the French psychologist Alfred Binet in the year 1905 who published the first modern intelligence test.