In the early twentieth century behaviorist Edward L. Thorndike began the development and use of measurement scales to replace personal judgment to evaluate student compositions in U.S. public schools. In 1912, utilizing the Fullerton and Catell equal difference theorem, Milo B. Hillegas released the first scientifically designed scale to measure…

Reflections on past and future uses of intelligence tests are presented. Three current approaches to intelligence tests are described: (1) neural efficiency, which relates the speed or quality of functioning of the neural system to test results; (2) information processing--cognitive micro-processes used in solving test items; and (3)…