Determination of Psychometric Indicators and Standardization of Intelligence Test of Children’s Raven Colored Progressive Matrices in Elementary School Students

The Raven’s Colored Progressive Matrices test is one of the valid IQ tests that is used to measure general intelligence (general factor). The Children's Colored version of this test is a useful tool for measuring 6 to 11 year old children. The purpose of this study was to determine the psychometric indicators and standardization of this test to assess the intelligence of elementary school students in Rasht.

The present study was a standardization study. In this study, confirmatory factor analysis was used to evaluate the validity of the scale. In order to estimate the parameters, the method of Weighted Least Square Mean and Variance Adjusted (WLSMV) with M-Plus 7.4 software was used. For this purpose, from the statistical population of elementary school students in Rasht who were studying in the academic year 2020-21 (N=48500), a sample of 1643 students were selected via random clustering method from privileged and semi-privileged areas and were tested. Assessment tools included Raven’s 36-item Colored Progressive Matrices (1949) and the non-verbal part of the fifth edition Stanford Binet IQ scale (2011).

Findings of the validity of the test showed a positive and significant correlation between the Children's Raven Colored Progressive Matrices scales and Stanford Binet (P<0.001, r=0.758), which indicates the favorable validity of the Children's Raven Colored Progressive Matrices Scale. Also, in evaluating the reliability of the Children's Raven Colored Progressive Matrices scales by Cronbach's alpha and test-retest in total and by gender, the obtained coefficients in the whole scale and by gender were more than 0.7. Also, using the standard score calculation method (z scores), the IQ equations of students in 6 grades of boys and girls (grades 1 to 6) on the Stanford-Binet IQ scale with an average of 100 and a standard deviation of 15 were obtained.

The Raven’s Colored Progressive Matrices is a good tool for measuring general intelligence. It is necessary to determine local norms for testing the intelligence of Colored Progressive matrices and the appropriateness of non-verbal psychometric tests in order to identify students with learning disabilities.