Columbia Mental Maturity Scale (CMMS)

Columbia Mental Maturity Scale (CMMS)

Columbia Mental Maturity Scale (CMMS)

By Namra Sarwar

Name Columbia Mental Maturity Scale (CMMS)
Purpose designed to assess the general reasoning ability of children
Population 3-9 years
Score Age deviation score
Time 15-20 min
Author Bessie Burgemeister, Lucille H. Blum, and Irving Lorge
Publisher The Psychological Corporation
Description The Columbia scale is “an individually administered instrument designed to assess the general reasoning ability of children between the ages of 3 years, 6 months to 9 years, 11 months.”  The CMMS consists of 92 pictorial and figural, classification items arranged in a series of eight overlapping levels. This test is used for children that might have some form of a limitation/disability that would deter them away from other tests.
Scoring Scoring is done by taking the raw score, Age Deviation Score, percentile rank, and Maturity index. 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 and Validity In regards to reliability, the CMMS manual reports both a split-half and test retest reliabilities. The split-half reliabilities are reported for each of the 13 age levels. Internal consistency coefficients ranging from low of .85 to a high of .91 with a median split half coefficient of .90 for the standardization group. A median test-retest reliability of .85 was obtained. The CMMS manual reports co relational data between the CMMS and the subtests of the SAT. This data indicates that the standard scores of the CMMS correlate with the various subtest scores of the SAT (with a median value of .57) for all Primary I Battery subtests. The Deviation IQ score of the Stanford-Binet and the CMMS correlated .67 for the 52 preschool and first grade children from a large southern city.
Norms Norms were found with a sample of 200 children selected from each age level closely reflecting the population. It was standardized on 2.600 children on the basis of parental occupation, race, geographic location, and size of residence community.
Suggested Uses The CMMS is recommended as an instrument for screening the general reasoning ability in young children. It is designed to help educators select curriculum materials and learning tasks for children with special needs or for normal children.
Prepared by Namra Sarwar

 

 

March 26, 2016 / by / in ,
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