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A Study of Means and Sex Differences on Raven’s Standard Progressive Matrices Plus in Yemen

Richard Lynn


Published: 2015/03/01


Yemen is one of the economically least developed countries in the Middle East, but information about intelligence in this country has been conflicting. In a recent study, the Standard Progressive Matrices-Plus was administered to a sample of 2012 6-13 year olds in a province of Yemen. The sample obtained a British IQ of 68.5. Girls obtained significantly higher average scores than boys at the ages of 7 and 10, and boys obtained a significantly higher average score than girls at age 13.

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