Scores composites CHC pour la WAIS-IV : normes francophones

Results from contemporary research have demonstrated the importance of fluid reasoning, working memory and processing speed in cognitive functioning. The developers of the WAIS-IV have introduced new subtests to strengthen the assessment of these cognitive dimensions. The interpretation of the WAIS-IV is currently based on four factorial indexes (VCI, PRI, WMI, and PSI), as well as on the FSIQ. The developers of the WAIS-IV indicated that one of the objectives of the revision was to update the theoretical foundations of this intelligence scale. However, the overall structure of the WAIS-IV is not aligned with the consensual Cattell-Horn-Carroll (CHC) theory of cognitive abilities. For instance, the technical manual of the WAIS-IV does not provide an index of fluid reasoning, although the authors emphasized the importance of this dimension in cognitive functioning. In this paper, we provide the French normative tables for five CHC composite scores of the WAIS-IV, namely, fluid reasoning (Gf), comprehension-knowledge (Gc), visual processing (Gv), short-term memory (Gsm), and processing speed (Gs). These norms were created using a statistical approximation procedure. Like the CHC norms that we have proposed for the WISC-IV, theses tables allow clinicians to switch towards the dominant interpretative framework and to use the CHC composite scores as complementary measures to the four standard index scores, in order to conduct normative and ipsative analyses.