![]() ![]() ![]() ![]() The objective of standardisation data is to allow for the location of an individual's ability relative to the general population, for purposes such as institutional placement. Importantly, two distinct categories of norms have been delineated in the psychometric assessment literature: (i) population-based norms ( standardisation data) representative of the general population that are typically derived on large samples and presented in association with a newly developed test and (ii) norms that closely approximate the subgroup to which an individual belongs ( withingroup norms), such as form the basis of the leading normative guidebooks in clinical neuropsychology (Mitrushina, Boone, Razani & D'Elia, 2005 Strauss, Sherman & Spreen, 2006). While there is now a fourth edition of the Wechsler Adult Intelligence Scale, WAIS-IV (Wechsler, 2008), the only cross-cultural research within the South African context to date is in respect of the WAIS-III, the normative implications of which continue to have crucial relevance for practitioners wishing to employ a WAIS in this country. The focus of this chapter is on the Wechsler Adult Intelligence Scale – Third Edition (WAIS-III) and its application within the South African context. ![]()
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