| Abstract: | Examined the degree of overlap between the WISC—R and the Woodcock-Johnson Tests of Cognitive Ability (WJTCA) from the Woodcock-Johnson Psycho-Educational Battery in 152 Ss (aged 7 yrs 4 mo to 12 yrs 10 mo) referred for evaluation because of suspected learning disabilities (LD). Analysis yielded 3 significant canonical correlations. The redundancy index showed that approximately 28.6% of the WJTCA subtest variance was predictable from the linear combination of the WISC—R subtests, and approximately 32.7% of the WISC—R subtest variance was predictable from the WJTCA subtests. Analysis of the structure correlations showed that the 1st canonical variates shared a general intelligence factor, the 2nd a perceptual speed factor, and the 3rd a numerical-memory factor. It is suggested that, if these findings are substantiated with a larger sample, the mean-score discrepancy previously found between the WJTCA and the WISC—R for children suspected of having LD is attributable to unique factor structures. (32 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved) |
