Tradition has it that boys are good at counting and girls are good at reading. So much so that Mattel once produced a talking Barbie doll whose stock of phrases included Math class is tough!Dr. Luigi Guiso of the European University Institute in Florence and his colleagues have just published the results of a study which suggests that culture explains most of the difference in maths, at least. In the end May issue of Science, they show that the gap in mathematics scores between boys and girls virtually disappears in countries with high levels of sexual equality, though the reading gap remains. Dr. Guiso took data from the 2003 OECD Programme for International Student Assessment. Some 276,000 15-year-olds from 40 countries sat the same maths and reading tests. The researchers compared the results, by country, with each other and with a number of different measures of social sexual equality. One measure was the World Economic Forums gender-gap index, which reflects economic and political opportunities, education and well-being for women. Another was based on an index of cultural attitudes towards women. A third was the rate of female economic activity in a country, and the fourth measure looked at womens political participation. On average, girls maths scores were, as expected, lower than those of boys. However, the gap was largest in countries with the least equality between the sexes (by any score), such as Turkey. It vanished in countries such as Norway and Sweden, where the sexes are more or less on a par. Average reading scores were higher for girls than for boys in all countries. But in more equal societies not only were the girls as good at maths as the boys, their advantage in reading had increased.
