Comparability of Columbia Mental Maturity Scale and Stanford-Binet, Form L-M, Estimates of Intelligence

The Columbia Mental Maturity Scale is an individually administered intelligence test designed for use with children ages 3Y2 to 9 yr. (Burgemeister & Blum, 1972). It correlates moderately (.40 to .50) with picture vocabulary tests such as the Peabody, Ammons, and Van Alstyne (Dunn & Harley, 1959) and with the Wide Range Achievement Test (Smith, 1961). Correlation coefficients with non-verbal measures of intelligence, such as the Pictorial Test of Intelligence (French, 1964) and the Leiter International Performance Scale (Miller, 1967), have been within the .50 to .60 range. These concurrent validity studies were conducted with the 1959 revision of the Columbia Scale in which the ratio IQ was still utilized. The present study compared estimates of intelligence on the 1972 revision of the Columbia Scale employing the deviation IQ and the Stanford-Binet for 45 educable mentally retarded children enrolled in preschool or special education classes. The children ranged in age from 4 yr., 11 mo. to 9 yr., 10 mo., with a mean age of 7 yr., 8 mo. All were administered the 1972 revision of the Columbia Mental Maturity Scale and the Stanford-Binet, Form L-M. The order of test administration was alternated and all tests were administered by certified school psychologists. The mean IQs (e standard deviations) for the tests were: Columbia, 74.56e14.40; Stanford-Binet, 72.14+12.50. A t test for dependent groups did not indicate a significant ( P . m ) difference between the means. A Pearson product-moment correlarion of .74 was obtained between the Columbia IQ and the Stanford-Binet IQ, suggesting good concurrent validity although the verbal and non-verbal requirements of the two instruments are different. The distribution of the intelligence quotients for the two tests was also comparable. For the Columbia Scale, all but six of the IQs fell within the 65 to 80 point range. One IQ was below 65 while the remaining five IQs were between 8 0 and 87. For the Stanford-Binet, all but four IQs were within the 65 to 80 ~ o i n t catenorv. One I 0 fell above 80 and three 10s were below . 65 points

Cognition · Columbia university · Comparability · Developmental psychology · Intelligence quotient · Percentile · Percentile rank · Psychiatry · Scale (ratio · Stanford–Binet Intelligence Scales · Statistics · Test (biology · Wechsler Adult Intelligence Scale · Wechsler Intelligence Scale for Children · Cognitive Abilities and Testing · Mathematics · Psychology