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Sex Differences in Means and Variance of Intelligence: Some data for Spain

Amelia Díaz, Khadija Sellami, Eugenia Lanzón, Teresa Lanzón and Richard Lynn

Published: 2010/03/01

Abstract

It has been very widely asserted that there is no sex difference in average general intelligence but that males have greater variability than females. We examine these propositions in a sample of 258 adults tested with the Progressive Matrices in Spain and find that both of them are incorrect.

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