READING ON THE WIDE-RANGE ACHIEVEMENT TEST-REVISED AND PARENTAL EDUCATION AS PREDICTORS OF IQ - COMPARISON WITH THE BARONA FORMULA

It is frequently necessary in research and clinical evaluations to obtain estimates of premorbid intelligence (IQ) which are separate from measured Ie. There is evidence that word reading may be useful in this aim Ira order to determine the potential of the Wide Range Achievement Test-Revised (WRAT-R) reading subtest (READ) as an estimate of premorbid Ie, the present study examined the relationship between READ and IQ in healthy subjects. Consistent with other findings, READ accounted for a significant amount of variance in Verbal, performance and Full Scale Ie. Race and parental education, the latter being a variable not previously examined in this literature, accounted for incrementally valid variance in ii! beyond READ. The predictive power of these variables compares favorably with estimates made by the Barona IQ estimation formula, which uses only demographic information.