title: Development of WAIS-III General Ability Index Minus WMS-III memory discrepancy scores.
abstract: Analysis of the discrepancy between intellectual functioning and memory ability has received some support as a useful means for evaluating memory impairment. In recent additions to Wechlser scale interpretation, the WAIS-III General Ability Index (GAI) and the WMS-III Delayed Memory Index (DMI) were developed. The purpose of this investigation is to develop base rate data for GAI-IMI, GAI-GMI, and GAI-DMI discrepancy scores using data from the WAIS-III/WMS-III standardization sample (weighted N = 1250). Base rate tables were developed using the predicted-difference method and two simple-difference methods (i.e., stratified and non-stratified). These tables provide valuable data for clinical reference purposes to determine the frequency of GAI-IMI, GAI-GMI, and GAI-DMI discrepancy scores in the WAIS-III/WMS-III standardization sample.
authors.affiliation: Riverview Hospital, Department of Research, Coquitlam, BC, Canada. rlange@bcmhs.bc.ca
authors.forename: Rael T
authors.initials: RT
authors.lastname: Lange
authors.forename: Gordon J
authors.initials: GJ
authors.lastname: Chelune
authors.forename: David S
authors.initials: DS
authors.lastname: Tulsky
mesh_terms: D000043:Abstracting and Indexing; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D007360:Intelligence / Q000502:physiology*; D008297:Male; D008568:Memory / Q000502:physiology*; D008875:Middle Aged; D009483:Neuropsychological Tests / Q000706:statistics & numerical data*; D011237:Predictive Value of Tests; D012015:Reference Standards; D015203:Reproducibility of Results; D014888:Wechsler Scales / Q000592:standards* / Q000706:statistics & numerical data*; D014894:Weights and Measures