Seeks to determine convergent validity values and to compare intelligence estimates for three tests across various levels and ranges of intelligence. Results indicated that the use of the PPUT or DAP for determining intelligence of kindergarten children is unjustified. (Author/PC)

This study compared the WISC-R and PPVT scores for a group of 65 students classified as mentally retarded, ranging in age from 7.5 to 14.5. For this sample of mildly retarded children and youth, the PPVT IQ score is significantly higher than the Full Scale IQ from the WISC-R. (Author)

The results of the present study suggested that PPVT and SIT IQs are not directly comparable to the WISC-R IQs when the moderate to low correlation coefficents are considered. In addition, the SIT appears to be more comparable to the WISC-R than does either Form A or Form B of the PPVT. (Author)

The data suggest that the WISC-R Verbal, Performance, and Full scales are almost equally lacking in racial bias and that all three scales are less biased than the PPVT. If the PPVT is used for initial screening, it will be important to follow up with a more thorough psychological evaluation. (Author)