Comparison of two methods for converting the WAIS to the WAIS-R.
Two methods for converting WAIS scores to WAIS-R scores were investigated. One method subtracted the mean differences between the WAIS and WAIS-R IQs and subtests means from the WAIS scores. The other method converted the WAIS and WAIS-R scores to T scores. Theoretically, the two methods should produce equivalent results. Because the SDs for the WAIS and WAIS-R were quite similar, the only components that remained to produce the difference were the means. Using 52 pairs of WAIS and WAIS-R scores, matched by age and education, both methods were compared. There was no statistically significant difference between the methods. Two new norming methods were discussed in terms of these results.
Russell
E W
EW
Veterans Administration Medical Center, Miami, Florida.
D000328:Adult; D006801:Humans; D007360:Intelligence; D008297:Male; D011594:Psychometrics; D012016:Reference Values; D014888:Wechsler Scales / Q000706:statistics & numerical data*