Résumé
The Raven's Standard Progressive Matrices Test [SPM] was administered to 300, 6th to 8th grade students of various schools to determine the effect of sex and social class on the SPM. There were 150 male and 150 female subjects. The hypothesis regarding social class was supported i.e. the higher the social class of the subject the higher was his raw score on the RSPM, indicating a higher intellectual capacity. Analysis of variance was computed to study the treatment effects of the 3 social classes and it was found that there was a statistically significant difference between the performance of the 3 groups i.e. F.01 [2, 297] = 101.15, p <.01 level. The results regarding sex differences on the above test were insignificant as determined by a t-test [t=.785, p<.05]