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Paragraph 1 Although much is made of differences between the brains of adult males and females, the sources of these differences are a matter of controversy. Some people put forward cultural explanations and note, for example, that when girls are taught separately from boys they often do better in subjects such as maths than if classes are mixed. Others claim that the differences are rooted in biology, are there from birth, and exist because girls’ and boys’ brains have evolved to handle information in different ways.

Paragraph 2 Although much is made of differences between the brains of adult males and females, the sources of these differences are a matter of controversy. 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 math, at least. On average, girls’ math scores were, as expected, lower than those of boys.