A series of item analyses of the Concept Assessment Kit Conservation (Goldschmid) conducted for a sample of educable mentally retarded children showed that the probability of a correct response differed from task to task. Evidence indicated that the order of difficulty of the tasks resembled that for nonretarded children. (Author)

Compared the derived mental age (MA) of the Stanford-Binet to the test age (TA) of the Wechsler Intelligence Scale for Children (Revised) in 100 children. For subjects whose WISC-R scores fell within the TA table, the two were comparable. When extrapolated TAs were required, the scores were not comparable. (Author/JAC)

Finds further evidence of the close equivalence of scores derived from the Wechsler Intelligence Scale for Children (Revised) and the Stanford-Binet, but fails to support the practice of computing adjusted mental age scores. Subjects were (N=25) children in the bright normal range of intelligence. (JAC)