The Wechsler Adult Intelligence Scale (WAIS) is an IQ test designed by psychologist, David Wechsler. The first version of the scale was published in 1955 and was created to test intelligence and cognitive ability. The next version of the test is expected to be published in 2021. Wechsler also developed an equivalent test for children, known as the Wechsler Intelligence Scale for Children (WISC).
The picture completion and block design tests help psychiatrists determine Performance IQ (PIQ) in a patient. Through these tests a person’s visuospatial intellectual abilities can be measured.
Also within this test are a series of picture cards taht must be put in order to make a story.