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This study examined the relationship between the Peabody Picture Vocabulary Test-Third Edition (PPVT-III) and Wechsler Adult Intelligence Scale-Third Edition (WAIS-III) using 40 adults who ranged in age from 18 to 41 (mean age of 22 years). Participants were administered the PPVT-III and WAIS-III in counterbalanced fashion to control for order effects. Results revealed that the PPVT-III score was related to the WAIS-III Verbal IQ (VIQ) and Full Scale IQ (FSIQ) scores but unrelated to the Performance IQ (PIQ) score. In addition, analyses indicated that, while there were no significant differences between the PPVT-III score and WAIS-III mean FSIQ and PIQ scores, the PPVT-III mean score was significantly lower than the WAIS-III VIQ. Further analysis indicated that the PPVT-III adequately estimated WAIS-III FSIQ and VIQ scores for participants who were classified as Average or High Average on the WAIS-III. However, for participants in the Superior range, the PPVT-III tended to underestimate FSIQ and VIQ scores by approximately 10 points., (Copyright 2001 John Wiley & Sons, Inc.)

This study investigated the comparability between three "amazingly" short forms of the WAIS-R (a dyad, triad, and tetrad) suggested by Kaufman, Ishikuma, and Kaufman-Packer (1991) and the complete battery among a sample of 114 educable mentally handicapped adolescents. Results indicate that the short forms are highly correlated with the complete battery Full Scale IQs, and all three short forms yielded scores, on average, within 2 points of the complete battery. Analyses at an individual level revealed that more than 90% of the sample fell within 3 SEM (9 points) of the FSIQ for all three short forms. Overall results are consistent with previous studies and support the use of these "amazingly" short forms.

This study investigated the comparability of item-reduction and subtest-reduction short forms of the Stanford-Binet Intelligence Scale: Fourth Edition (SB:IV) with the complete battery in a sample of college students. All item-reduction SASs were not significantly different from the full battery SASs. Correlations for corresponding SASs and subtests between the complete and short form were highly significant, and analyses of the short-form profile supported the interpretation of individual subtests. The subtest-reduction short-form SASs were significantly lower than both the item-reduction short form and the full battery. Thus, an item-reduction short form proved to be a more comparable estimate of the full battery composite than the subtest-reduction short form.