Validity of the Peabody Picture Vocabulary Test-Revised with mentally retarded adults

Investigated the validity of using the PPVT -R with mildly mentally retarded adults. The PPVT -R, PPVT , and WAIS-R were administered to 21 Ss, and WAIS scores were obtained from client files. Results indicated that the revised Peabody tended to yield significantly lower estimates of functioning than did the other measures. Implications are discussed.