Before the the last war psychological tests were not much used in mental hospitals, as there were few tests suitable for adults and, for that matter, hardly any trained clinical psychologists in the country. The “Binet” test or some modification of it was most commonly used, but it is unsatisfactory for adults, and now redundant. The war produced a considerable number of reliable adult tests, standardized on large samples of service men and women, and, although the effective age-range was restricted by service requirements, the tests are a great improvement on pre-war material, and a welcome addition to the clinical psychologist's stock-in-trade.