Abstract
This study reports the results of the application of Raven's Progressive Matrices (PM) to a representative sample of Iranian children attending schools in Teheran, the capital city of Iran. The study showed that boys did score slightly higher on the PM than did the girls, the differences being significant up to age 13. There was a consistent increase in PM scores at successive age levels, but the increments were not significant beyond age 15. Iranian children scored considerably below the British norms, although this decrement might have been due to the timed administration of PM in Iranian samples and to a variety of cultural factors. The reliability and validity of the PM were found to be satisfactory. Although the findings indicated the general suitability of the PM for use with Iranian children, there is a need for further normative and validity studies.

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