Abstract
100 mildly mentally retarded patients (50 male and 50 female) were given the Raven Coloured Progressive Matrices, the Peabody Picture Vocabulary Test, and the Vocabulary subtest from the Stanford-Binet, Form L-M. There were no significant correlations between the Raven and the other tests. A significant correlation of .70 obtained between the Peabody Picture Vocabulary Test and the Stanford-Binet Vocabulary subtest. Possible reasons for lack of the usual correlation of the Matrices with tests of verbal ability for this sample are discussed.
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