The study investigated the test-retest reliability of the Slosson Intelligence Test when administered and scored by 9 special education teachers who had no experience in psychological testing. Subjects were 53 profoundly and severely retarded children, ranging in age from 5 to 16 yr. Pearson product-moment coefficients were .92 for girls, .96 for boys, and .94 for all subjects for scores on two occasions. The results support Slosson's contention that the test can be reliably administered by personnel with little psychometric knowledge.
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