Decades of rigorous testing of girls and boys confirm that there are few psychological differences between the sexes, and that the differences seen are heavily shaped by culture, not biology. Research into our evolutionary past shows that sexual division of labor and male domination are not biologically hardwired into human society, as some have claimed, but that we were once an egalitarian species. Even the age-old myth about women being less promiscuous than men is being overturned.
