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The author points out that for some time there has been a distinct need for good tests of adult intelligence. The modified Binet test contains a poor means of differentiation between the smart and the dull adult, although the dull adult, of course, can be compared with a child. With the help of some Works Progress Administration workers and his own staff, Wechsler at the Bellevue Psychopathic Hospital in New York has developed a new scale which is especially adapted for the evaluation of adult intelligence. In discussing some of the factors involved in measuring adult intelligence the author goes on to explain some of the details which were elicited by developing the present scale. For instance, one of the things that are noticeable is that test results in an adult scale decrease with age. There are other factors which apparently have never been adequately studied on adults, which Wechsler
The Measurement of Adult Intelligence. JAMA. 1940;114(8):683-684. doi:10.1001/jama.1940.02810080055033