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Pielstick, N. L.; Thorndike, Robert M. – Psychology in the Schools, 1976
Reanalysis of Wakefield and Carlson's data confirmed canonical correlations of .84 and .69, but analysis of redundancies revealed that only 34 percent of the total WISC subtest variance is redundant with the ITPA and 39 percent of the ITPA subtest variance is redundant with the WISC. (Author)
Descriptors: Comparative Testing, Intelligence Tests, Statistical Analysis, Test Reliability

Adams, Jerry; Lieb, Jack J. – Psychology in the Schools, 1973
The Canter-BIP (Background Interfence Procedure) represents an instrument free of many effects found to add to error variance in the application of other instruments. It is essentially free of sex, intelligence level, emotional status and maturational effects, and, at least for young children, is essentially free of ethnic group effects. (Author)
Descriptors: Comparative Testing, Ethnic Groups, Preschool Children, Psychological Testing