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ETHNIC AND RACIAL DIFFERENCES ON THE STANDARD PROGRESSIVE MATRICES IN MEXICO
RICHARD LYNN a1, EDUARDO BACKHOFF a2andL. A. CONTRERAS a2 a1 University of Ulster, Coleraine, Northern Ireland a2 University of Baja California, Mexico
Raven’s Standard Progressive Matrices test was administered to a representative sample of 920 white, Mestizo and Native Mexican Indian children aged 7–10 years in Mexico. The mean IQs in relation to a British mean of 100 obtained from the 1979 British standardization sample and adjusted for the estimated subsequent increase were: 98·0 for whites, 94·3 for Mestizos and 83·3 for Native Mexican Indians.