MULTIPLE REGRESSION EQUATIONS FOR PREDICTING READING AGE FROM CHRONOLOGICAL AGE AND WISC VERBAL I.Q.

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Abstract
Summary. To assist clinical and educational psychologists in comparing a child's reading attainment on the Schonell Graded Word Reading Test (GWRT) with that expected from one of his age and I.Q., three multiple regression equations are presented. These enable the psychologist to predict Reading Age on Schonell's GWRT from a given chronological age and WISC Verbal I.Q.The equations were calculated from data relating to 500 children tested at the Children's Department of the Maudsley Hospital, with the Schonell Graded Word Reading Test and the Wechsler Intelligence Scale for Children. Separate predictor equations are presented for age groups 6.2‐9 years, 10–12 years, 13–15 years, because of the differing correlations between reading age and I.Q., which are found with increase in chronological age.

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