The Weschler Intelligence Scale for Children (WISC)

Much of the research into and diagnosis of dyspraxia has utilized the WISC in its various versions. Madeleine Portwood's research is based on over 300 assessments on children and young adults believed to be dyspraxic and profiles obtained - the vast majority using the WISC-RS, WISC-III,WAIS and WPPSI-R. As the tests can only be performed by qualified psychologists the format of the tests may be unfamiliar.

The tests consist of 11 subtests each designed to measure either the verbal or performance ability of the subject. In the verbal section the tests are Information, similarities, Arithmetic, Vocabulary, Comprehension and Digit Span whilst in the performance section the tests are Picture completion, Coding, Picture Arrangement, Block Design and Object Assembly. Each section is scored separately and both a 'Verbal IQ' and 'Performance IQ' obtained. These are then combined to give a final IQ. A substantial difference between 'Verbal IQ' and 'Performance IQ' is one of the main hints that the subject may be dyspraxic

It should be remembered that by itself the WISC cannot be used to confirm the diagnosis of Dyspraxia. A review of the child's history and a Motor Skills Screening test should also be used.

Full details of the research and profiles of Dyspraxic children can be found in 'A Practical Manual for Parents and Profesionals'

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