Created by American psychologist (1896–1981), these are the most widely used IQ tests in the world. Unlike earlier tests (e.g., Stanford-Binet), Wechsler argued that intelligence is multidimensional —not just verbal ability, but a combination of verbal and non-verbal (performance) skills.
The Wechsler tests were developed by David Wechsler, a Romanian-American psychologist. The first edition of the WAIS was published in 1955, and the WISC in 1949. Since then, several revisions have been made, with the most recent versions being the WAIS-V (2014) and WISC-V (2014). test de wechsler