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The Columbia Mental Maturity Scale (CMMS) is an individually administered instrument designed to assess the general reasoning ability of children between the ages of 3 years and 6 months to 9 years and 11 months. The CMMS consists of 92 pictorial and figural classification items arranged in a series of eight overlapping levels. Each of the eight levels contains between 51 and 65 items that are appropriate for a specific chronological age. Scoring: Administration of the CMMS takes approximately 15 to 20 minutes and yields several scores:
The Age Deviation Score is a standard score with a mean of 100 and a standard deviation of 16. The maturity indexes are comparable to mental ages although they are more global, employing the use of ranges of age rather than specific mental ages. Reliability: The CMMS manual reports both split-half and test retest reliabilities. The split-half reliabilities are reported for each of the 13 age levels with the items for each age level divided in half forming two half-tests for each age level. The manual reports internal consistency coefficients ranging from a low of 0.85 to a high of 0.91 with a median split-half coefficient of 0.90 for the standardization group indicating excellent internal consistency. Test-retest reliability coefficients for three different age groups are reported for an interval of 7-10 days. A median test-retest reliability of 0.85 was obtained. |
Validity: The Columbia Mental Maturity Scale manual reports correlational data between the CMMS and the sub-tests of the SAT. These data indicate that the inter-level standard scores of the CMMS correlate substantially with the various sub-test scores of the SAT with a median value of 0.57 (0.31 to 0.61) for all Primary I Battery sub-tests and a median value of 0.47 (0.43 to 0.61) for all Primary II Battery sub-tests. The correlation of CMMS scores and two measures of intellectual ability, the Otis-Lennon Mental Ability Test (OL) and the Stanford-Binet Intelligence Scale (SB) are reported as concurrent validity. The ADS of the CMMS and the Deviation IQ of the Otis-Lennon correlated from 0.62 to 0.69. The Deviation IQ score of the Stanford-Binet Intelligence Scale and the ADS of the CMMS correlated 0.67 for 52 preschool and first-grade children from a large southern city.
Norms: The CMMS was standardized on 2,600 children stratified on the basis of parental occupation, race, geographic location and size of residence community. A sample of 200 children were selected for each age level closely reflecting the population indicated by the 1960 U.S.
Suggested Uses: The CMMS is recommended as an instrument for screening the general reasoning ability in young children.
Purpose:The Columbia Mental Maturity Scale is designed to assess the reasoning ability of children.
Population: Ages 3 to 9.
Score: Age Deviation Score.
Time: 15 - 20 minutes.
Authors: Bessie Burgemeister, Lucille H. Blum, and Irving Lorge.
Publisher: The Psychological Corporation.
Tags: MMS, reasoning ability, pictorial, figural classification, Raw score, Age Deviation Score, Percentile rank, Stanine, Maturity Index, Age Deviation Score, standard score, standard deviation, SAT, Otis-Lennon Mental Ability Test, Stanford-Binet Intelligence Scale, The Psychological Corporation.
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