PREDICTION OF WAIS-R PERFORMANCE-BASED ON THE LURIA-NEBRASKA NEUROPSYCHOLOGICAL BATTERY FORM-II IN A PSYCHIATRIC POPULATION

Multiple regression equations for predicting summary IQ scores using t he Luria Nebraska Neuropsychological Battery Form II were similar to t hose previously reported for Form I. However, when the Impairment scal e, which is not available on Form I, was entered in the analysis, it w as found to account for more variance than the Intellectual Processes Scale. After entry of the Impairment Scale no other scale accounted fo r significant variance. Classification of patients into four categorie s of IQ indicated that Form II like Form I can be sufficiently accurat e in predicting WAIS-R scores to be useful clinically. These findings raise the possibility that administering only the Impairment Scale may allow accurate classification and a quick estimate of WAIS-R IQ measu res.