A learning disability index (LDI) based on a principal components analysis of the Weschler Intelligence Scale for Children-Revised normative data has been developed to depict verbal or nonverbal deficits on that test. Ss (N=1550) referred for educational difficulties returned mean scores on the LDI that were reliably different from expected scores…

Evaluated was whether factor analysis of the 12 Illinois Test of Psycholinguistic Abilities subtest scores earned by 90 underachieving children (between 5 and 10 years of age) would support the dimensions of psycholinguistic processes, organizational levels, and communication channels as described in the clinical model of the instrument. (Author)

The study examined correlations between the Wechsler Intelligence Scale for Children-Revised (WISC-R), the Peabody Picture Vocabulary Test-Revised (PPVT-R), and the Kaufman Assessment Battery for Children (K-ABC) for 44 learning disabled primary and intermediate special class students. The Mental Processing and Achievement scales of K-ABC…

The study was designed to determine not only the comparability of the Wechsler Intelligence Scale for Children (WISC) and the WISC-Revised (WISC-R) with 40 minimal brain dysfunction children (6-10 years old), but also to determine whether well-established, clinically useful configurations emerge in the WISC-R as they do in the WISC. (Author/SBH)