PubMed · 7107933
Verbal-performance IG discrepancy score: a comment on reliability, abnormality, and validity.
Abstract
Analyzed the reliability abnormality, and validity of Verbal-Performance discrepancy scores on the WISC-R in relation to clinical decision-making about learning disabilities. From the standpoint of screening and differential diagnosis, the information of greatest value seems to be the magnitude of the discrepancy that is both reliable and valid for learning-disabled children. Inasmuch as definitive evidence on validity is not available at present, it is recommended that discrepancy scores not be used as the primary diagnostic tool. Information on the abnormality of the scores was judged less useful in this context.
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R A Berk. 1982. Verbal-performance IG discrepancy score: a comment on reliability, abnormality, and validity.. https://doi.org/10.1002/1097-4679(198207)38%3A3%3C638%3A%3Aaid-jclp2270380332%3E3.0.co%3B2-2
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