It is said that girls and boys learn their stereotypical behaviour from their social environment. This is not true: such behaviour is already determined in the womb.

Gender differences in the brain and in behaviour are found in areas other than those associated with reproduction. One of the typical gender differences between boys and girls, which are often thought to be learned from the social environment, is the way they play. Boys are more active, wilder and prefer playing with soldiers and cars while girls like playing with dolls.

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