Abstract
This study investigated the relationships among the Peabody Picture Vocabulary Test-Revised (PPVT-R) alternate forms and, also, the relationship of each PPVT-R form with the Wechsler Adult Intelligence Scale-Revised (WAIS-R) for a referred sample of 60 adult clients of the California State Department of Rehabilitation. Clients ranged in age from 18-3 to 37-7 (M = 25-7, SD = 5-9). PPVT-R alternate forms r = .88 was significant at p less than .001. Correlations with the WAIS-R VIQ were .82 for L, .78 for M; with PIQ, .46 for L, .38 for M; with FSIQ, .77 for L, .67 for M. All correlations with both forms of the PPVT-R were significant. PPVT-R mean scores did underestimate significantly all WAIS-R mean scores. Implications are discussed.
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