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A Comparison of an Achievement Battery with Two Tests of Ability with Educable Mental Retardates. Final Report.
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MacKinnon, Ronald C.; Elliott, Charles – 1969
To find the concurrent validity of two scholastic aptitude tests when a scholastic achievement test was used as a criterion for use in placement of mentally retarded children, 127 subjects were involved. The California Achievement Test (CAT) was used as a criterion measure, and the Primary Mental Abilities test (PMA) and the Slosson Intelligence…
Descriptors: Achievement Tests, Aptitude Tests, Comparative Testing, Correlation