Wechsler Adult Intelligence Test

Hamburg-Wechsler adult intelligence test (D. Wechsler, 1964) 60-90 minutes... 

Digital Symbol Substitution Test. A subtest of the Wechsler Adult Intelligence Scale (WAIS), the Digital Symbol Substitution test measures sensory-motor integration and learning relationships of symbols. It has been used in many psychophar-macological studies. Subjects are given different forms of this test at each session. The test requires the patient to match as many of 100 symbols to their respective numerals, found in a code key, as possible within 60 seconds. 

Wechsler Adult Intelligence Scale. The WAIS consists of 11 subtests six verbal tests and five performance tests. This provides an age-related IQ in adults from 16 to 75 years of age that is, the test measures intelligence of persons in relation to their age group and not to the entire population. It may be used either as an initial assessment or as a tool to measure change. The test, which takes 40 to 60 minutes to complete, provides 13 scores in verbal and performance categories plus a total score. 

Karmiloff-Smith I would like to come back to the issue about whether it is possible to differentiate different phenotypes on the basis of psychometric tests. In my field we have to use psychometric tests because there is no other acceptable way of matching different phenot ypes. Take the Wechsler adult intelligence scale (WAIS) if you look at the pattern of scores on individual subtasks, we find different patterns for Down s syndrome, Williams syndrome and autism, for example, despite the same overall score. But non-standardized tests differentiate these phenotypes far better. 

In the 1980s it was discovered that the renormalizations of the Stanford—Binet IQ test, ongoing since its introduction in America in 1932, and the renormalizations of the other major IQ test, the Wechsler Adult Intelligence Scale (WAIS), ongoing since 1953, had been hiding the fact that the performance of the American population on IQ tests had been increasing about 3 points per decade or approximately 10 points per generation. 

This is a subtest of the Wechsler Adult Intelligence Scales-Revised (WAIS-R). Participants are required to arrange red and white blocks to copy the visual presentation of a printed design. There are time limits for each of the problems and subjects receive points for each design depending on the time to perfect completion. This is a test of visuoconstructional assembly ability and visuomo-tor coordination. It is sensitive to cortical dysfunction, but primarily parietal lobe dysfunction. 

The Intelligence Quotient Tests for preschool children, school children and adults such as Stanford-Binet, Wechsler group tests, etc. 

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