Correlations Among the Hiskey,K-Abc Nonverbal Scale,Leiter,and Wisc-r pErformance Scale With Public-School Deaf Children

Abstract

The Hiskey-Nebraska (H-NTLA), K-ABC Nonverbal Scale (NS), Leiter, and the WISC-R Performance Scale (using Anderson and Sisco deaf norms), were administered to 31 hearing-impaired (HI) children enrolled in self-contained, hearing- handicapped programs in a public school setting. Testing spanned a 3-month interval. The group mean score on the K-ABC NV (M = 94.10) was significantly lower than the Leiter mean score (M = 100.71) or the WISC-R PIQ mean score (M = 103.00), as demonstrated by significant dependent t-test analyses (p < .01, p < .001, respectively). All other t-test results, including the K-ABC NV to the H-NTLA (M = 99.21), were nonsignificant. The Pearson product-moment cor relations among the four instruments were all significant and ranged from .57 (K-ABC NV with H-NTLA, p < .01) to .78 (K-ABC NV with Leiter, p < .0001). While results showed the K-ABC NV to have ample construct validity, it appeared to underestimate the intellectual skills of the HI population. Separate deaf norms on the K-ABC NV would be necessary for the recom mended general use of this instrument.

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