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Wiley InterScience | ||||||||||||
  Psychological ScienceVolume 17 Issue 12, Pages 1040 - 1046 Published Online: 13 Dec 2006 © 2009 Association for Psychological Science
Abstract | References | Full Text: HTML, PDF (Size: 150K) | Related Articles | Citation Tracking  Research Article Sex Differences in Intellectual Performance: Analysis of a Large Cohort of Competitive Chess Players Copyright Copyright © 2006 Association for Psychological Science ABSTRACTABSTRACT—Only 1% of the world's chess grandmasters are women. This underrepresentation is unlikely to be caused by discrimination, because chess ratings objectively reflect competitive results. Using data on the ratings of more than 250,000 tournament players over 13 years, we investigated several potential explanations for the male domination of elite chess. We found that (a) the ratings of men are higher on average than those of women, but no more variable; (b) matched boys and girls improve and drop out at equal rates, but boys begin chess competition in greater numbers and at higher performance levels than girls; and (c) in locales where at least 50% of the new young players are girls, their initial ratings are not lower than those of boys. We conclude that the greater number of men at the highest levels in chess can be explained by the greater number of boys who enter chess at the lowest levels. (Received 12/23/05; Revision accepted 2/28/06; Final materials received 3/6/06) | 
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