So, despite the myth that men evolved as hunters and tool users and makers and women did something else (usually we think of them preparing the food and tending to babies), We don't have any evidence that early men made more tools than early women (or even that there were any differences in who made which tools), nor that one gender had more spatial knowledge of the areas used by the group. We know that in societies across the planet today there are large differences in the types of tools men and women make and use, and that there are widening differences in the use of living and working space as agriculture, industrialization, and economic stratification increases. We also have no evidence indicating who prepared the food in the past, but we do know that today preparation of food varies across cultures, with a majority of societies having women do most of the preparation work. We also have widely varied results from tests that measure male and female math and spatial abilities (though actually there is very little difference overall: see chapter 6) as well as from tests that measure hand-eye coordination, although men seem to be able to throw things a little better and farther. Still, that pattern might also be related to men being bigger and having higher muscle density on average than women.
She speculates that early educational experiences may be key. “Danish children are often encouraged to be more independent,” she said. “They are better at playing in small groups, and they seem to have more socially appropriate ways of interacting with each other at an early age.” These skills may be related to better impulse control, Krassner said. “But of course, it’s both nature and nurture,” she added, since a child’s ability to control impulses may be partly inherited and partly learned from his or her parents. “There’s a mixture of biological and environmental factors.”