Subtest Raw Scores Research Articles

Estimation of WAIS-III Intelligence from Combined Performance and Demographic Variables: Development of the OPIE-3

Data from the WAIS-III standardization sample (The Psychological Corporation, 1997) was used to generate several FSIQ estimation formulas that used demographic variables and current WAIS-III subtest performance. The standardization sample (N =2,450) was randomly divided into two groups, the first was used to develop the formulas and the second group was used to validate the prediction equations. Age, education, ethnicity, gender, region of the country as well as Vocabulary, Information, Matrix Reasoning, and Picture Completion subtests raw scores were used as predictor variables. Regression formulas were generated using four subtest, two subtest, single verbal, two performance subtest, and single performance algorithms. The four-subtest model combined Information, Vocabulary, Matrix Reasoning, and Picture Completion raw scores with demographic variables. The two-subtest algorithm used Vocabulary and Matrix Reasoning raw scores with demographic variables. Formulas to estimate FSIQ using only verbal or performance subtests were developed for use with lateralized populations. The formulas for estimating premorbid FSIQ were highly significant and accurate in predicting FSIQ scores of participants in the WAISIII normative sample.

Controlling for constructional dysfunction with the visual reproduction subtest of the wechsler memory scale-revised in alzheimer's disease

Abstract The purpose of the present study was to investigate a method for quantifying the contribution of constructional skills on the Visual Reproduction subtest of the Wechsler Memory Scale-Revised in patients with Alzheimer's disease (AD). To correct for constructional problems, a proportion score was created by dividing the subtest raw scores from standard administration by the total score obtained for copying the designs. Seventeen patients with probable AD were compared to 17 controls. Using the proportion score, one-way analysis of variance demonstrated that control subjects reproduced significantly more information at both immediate and delayed conditions and retained a greater percentage of information over the delay. The results of this study indicated that patients with AD showed greater visual memory impairment on the Visual Reproduction subtest as compared to control subjects independent of constructional skills.

Mayo's older americans normative studies: WMS-R norms for ages 56 to 94

Abstract Data obtained in Mayo's Older Americans Normative Studies (MOANS) provide age-specific norms for the Wechsler Memory Scale-Revised (WMS-R) on a sample of 441 cognitively normal persons age 56 to 94. Memory Indices derived from these norms are termed “MAYO Verbal Memory (MVeMI), MAYO Visual Memory (MViMI), MAYO General Memory (MGMI), MAYO Attention/Concentration (MACI), MAYO Delayed Recall (MDRI) and MAYO Percent Retention (MPRI) Indices” to differentiate them from traditional WMS-R Memory Indices. MVeMI, MViMI, MGMI and MACI values are, by design, estimates of WMS-R Indices. Test administration and index computation differences employed in these projects prohibit extension of the WMS-R Delayed Memory Index to older ages. However, two new indices (MDRI and MPRI) are presented to serve similar purposes. Tables needed to convert WMS-R subtests raw scores to age-corrected scaled scores and to determine the summary MAYO Indices are presented for ages 56 through 94. A different methodology was used to compute MAYO indices than is used to compute WMS-R indices. Nonetheless, concordance rates suggest that the performance characteristics of the comparable MAYO and WMS-R Verbal Memory, Visual Memory, General Memory and Attention/Concentration Indices are very similar at ages where both can be validly calculated.

Comparison of revised beta examination first and second edition score distributions within a state prison population

Compared first and second edition Revised BETA Examination score distributions of male prison inmates within the North Carolina correctional system. Found that inmates score significantly lower on the second edition (BETA II) than on the first edition (BETA I), regardless of the order of administration to separate samples of 285 inmates each. The greatest difference in score distributions is when the BETA II is administered first followed by the BETA I. BETA I score distributions appear unaffected by the order of administration; whereas, there is a marked difference in BETA II score distributions depending on whether the BETA II was administered first or second. The difference in score distributions of the two tests was attributable to the standardization sample for the BETA II, which apparently produced considerably higher subtest raw scores than the samples employed to develop standardization score data for the BETA I. Further research with samples drawn from different populations was encouraged, especially testretest reliability studies with the BETA II.

Analysis of the piat with Anglo and Mexican-American children

This study analyzed the utility of the PIAT when administered to separate samples of Anglo and Mexican-American children using the WRAT and WISC-R as comparative measures. Thirty-one Mexican-American and 31 Anglo-American children were matched on the basis of sex, age, SES, educational placement, and reason referred for psychological assessment. All children were administered the PIAT, WRAT, and WISC-R. Partial intercorrelations (CA held constant) among the PIAT subtest raw scores and subtests of the WRAT purporting to measure the same construct were performed. Adequate concurrent validity was found for the PIAT Mathematics, Spelling, and Reading Recognition subtests for both Anglo and Mexican-American children. Analysis of subtest means and concurrent validity between ethnic groups showed general equivalence with the exception of WISC-R Verbal IQ means, which was significantly lower for the Mexican-American group. Implications for assessing Mexican-American children are discussed.