title: A cross-cultural comparison between South African and British students on the Wechsler Adult Intelligence Scales Third Edition (WAIS-III).
abstract: There is debate regarding the appropriate use of Western cognitive measures with individuals from very diverse backgrounds to that of the norm population. Given the dated research in this area and the considerable socio-economic changes that South Africa has witnessed over the past 20 years, this paper reports on the use of the Wechsler Adult Intelligence Scale Third Edition (WAIS-III), the most commonly used measure of intelligence, with an English second language, multilingual, low socio-economic group of black, South African university students. Their performance on the WAIS-III was compared to that of a predominantly white, British, monolingual, higher socio-economic group. A multi-group confirmatory factor analysis showed that the WAIS-III lacks measurement invariance between the two groups, suggesting that it may be tapping different constructs in each group. The UK group significantly outperformed the SA group on the knowledge-based verbal, and some non-verbal subtests, while the SA group performed significantly better on measures of Processing Speed (PS). The groups did not differ significantly on the Matrix Reasoning subtest and on those working memory subtests with minimal reliance on language, which appear to be the least culturally biased. Group differences were investigated further in a set of principal components analyses, which revealed that the WAIS-III scores loaded differently for the UK and SA groups. While the SA group appeared to treat the PS subtests differently to those measuring perceptual organization and non-verbal reasoning, the UK group seemed to approach all of these subtests similarly. These results have important implications for the cognitive assessment of individuals from culturally, linguistically, and socio-economically diverse circumstances.
authors.affiliation: Department of Psychology, University of the Witwatersrand, Johannesburg South Africa.
authors.forename: Kate
authors.initials: K
authors.lastname: Cockcroft
authors.affiliation: Psychology, University of North Florida, Jacksonville, FL USA.
authors.forename: Tracy
authors.initials: T
authors.lastname: Alloway
authors.affiliation: Psychology, University of North Florida, Jacksonville, FL USA.
authors.forename: Evan
authors.initials: E
authors.lastname: Copello
authors.affiliation: Department of Psychology, University of the Witwatersrand, Johannesburg South Africa.
authors.forename: Robyn
authors.initials: R
authors.lastname: Milligan
keywords: WAIS-III; cross-cultural; culture-fair; intelligence tests; working memory
references.citation: Clin Neuropsychol. 2007 Sep;21(5):776-88
references.pmid: 17676543
references.citation: Clin Neuropsychol. 2006 Jun;20(2):243-60
references.pmid: 16690545
references.citation: Psychol Bull. 1990 Mar;107(2):238-46
references.pmid: 2320703
references.citation: J Exp Child Psychol. 2010 May;106(1):20-9
references.pmid: 20018296
references.citation: Scand J Psychol. 2019 Dec;60(6):513-519
references.pmid: 31587302
references.citation: Psychol Sci. 2003 Nov;14(6):623-8
references.pmid: 14629696
references.citation: J Clin Exp Neuropsychol. 2003 Dec;25(8):1102-16
references.pmid: 14566584
references.citation: J Clin Exp Neuropsychol. 1999 Jun;21(3):375-84
references.pmid: 10474176
references.citation: Psychol Methods. 2002 Mar;7(1):64-82
references.pmid: 11928891
references.citation: Arch Clin Neuropsychol. 2007 Mar;22(3):333-41
references.pmid: 17298874
references.citation: J Speech Lang Hear Res. 1997 Jun;40(3):519-25
references.pmid: 9210111
references.citation: J Int Neuropsychol Soc. 1998 May;4(3):291-302
references.pmid: 9623004
references.citation: J Exp Child Psychol. 2004 Feb;87(2):85-106
references.pmid: 14757066
references.citation: Brain Cogn. 2003 Aug;52(3):326-33
references.pmid: 12907177
references.citation: J Gen Psychol. 1991 Oct;118(4):327-34
references.pmid: 1813596
references.citation: Arch Clin Neuropsychol. 2007 Mar;22(3):355-65
references.pmid: 17320344
references.citation: Appl Neuropsychol. 2009;16(2):98-104
references.pmid: 19430991
references.citation: J Int Neuropsychol Soc. 2001 May;7(4):510-5
references.pmid: 11396553
references.citation: J Clin Psychol. 1988 Mar;44(2):231-48
references.pmid: 3360941
references.citation: J Int Neuropsychol Soc. 2004 Jul;10(4):566-77
references.pmid: 15327735
references.citation: Clin Neuropsychol. 1999 Nov;13(4):396-404
references.pmid: 10806451
references.citation: Psychol Rev. 1990 Jul;97(3):404-31
references.pmid: 2381998
references.citation: J Clin Exp Neuropsychol. 2004 Oct;26(7):903-20
references.pmid: 15742541
references.citation: J Clin Psychol. 1991 Jul;47(4):548-57
references.pmid: 1939700