Sex differences in 3 year olds on the Boehm Test of Basic Concepts: Some data from Mauritius

Sex differences on the Boehm Test of Basic Concepts are examined in a sample of approximately 1400 3 year olds in Mauritius. Girls obtained a significantly higher Full Scale IQ by .11d, the equivalent of 1.65 conventional IQ points, and a significantly higher performance IQ by 1.95 IQ points. The results confirm previous studies that have found that among preschool children girls have slightly but significantly higher IQs than boys. There was no sex difference in variance, contrary to the frequent assertion that variance is greater in males than in females.