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Theoretical positions and significant factors associated with reading disability are noted. Review of WISC studies indicates that retarded readers as a group generally perform more poorly on Information, Arithmetic, Digit Span, and Coding and more highly on Picture Completion in comparison with nonretarded readers. These results are related to factorial studies of the WISC and methodological suggestions for future research are specified.
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Johnson et al. (1977) studied this question.
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