The Wechsler Adult Intelligence Scale (WAIS) is an IQ test that's been in use since 1955 and has offshoot tests for children (WISC) and preschoolers (WPPSI). The Wechsler Individual Achievement Test, or WIAT, is a test that measures a person's intelligence. The test can be taken by children and adults from age four to 85. Children and adolescents are often given the WIAT in order to identify areas where they may struggle or excel at in school.
Wechsler Adult Intelligence Scale. Wonderlic Test Originally published in 1955 by David Wechsler, the Wechsler test was designed to measure a person’s intellectual ability in far greater resolution than tests such as the Stanford-Binet. This is not an accredited intelligence test and the scores derived from it may not accurately.