Summary. 100 children aged 8 to 16, in a residential school for the partially hearing (48 boys, 52 girls) were tested on the performance and verbal subscales of the WISC and on tests of reading and arithmetic. Measures of hearing loss and social adjustment were obtained. Age, sex, parental social class and supposed aetiology were recorded for each child. Ratings of parental interest in the child's school progress and the amount of parental pre‐school guidance received were also made.
The distribution of quotients on the WISC Performance subscale was found to be closely similar to that of the standardisation population. However, the distributions of quotients on the verbal subscale and the measures of attainment, though normal, were depressed by up to 21 points from the standardisation means. The social adjustment of the children was found to be significantly worse than that of a group of normal 7‐ and 8‐year‐olds, the predominant pattern of maladjustment being demonstrative rather than withdrawing. The first three factors obtained from a principal components analysis rotated to the Varimax criterion were identified as Verbal, Numerical and Performance Ability. These three factors were contrasted with the two found by analysing Wechsler's correlation data on the WISC.
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