Normative data for 8-15 year olds for the Standard Progressive Matrices in Saudi Arabia were obtained in 1977 and 2010. The 2010 sample obtained higher average scores than the 1977 sample by 0.78d, equivalent to 11.7 IQ points. This represents a gain of 3.55 IQ points a decade over the 33 year period. (Contains 1 table.)

Cognitive processes in the Raven Progressive Matrices Test, a nonverbal test of analytic intelligence, are analyzed in terms of processes distinguishing between high- and low-scoring students and processes common to all subjects and test items. Two experiments with 89 college students identify the abilities distinguishing among individuals. (SLD)

Thirty bilingual Hispanoamerican students between the ages of eight and thirteen were given verbal and non-verbal intelligence tests which were then correlated with overall school grade point average. Non-verbal tests resulted in higher correlations; the Raven Colored Progressive Matrices appeared to be the best predictor of school successes of…