“Humanity’s jaunt into monotheism, agriculturally based economies and the monopolization of power and resources by a few men was ‘unnatural’ in many ways,” Schmitt says, alluding to evidence that hunter-gatherers were relatively egalitarian. “In some ways modern progressive cultures are returning us psychologically to our hunter-gatherer roots,” he argues. “That means high sociopolitical gender equality over all, but with men and women expressing predisposed interests in different domains. Removing the stresses of traditional agricultural societies could allow men’s, and to a lesser extent women’s, more ‘natural’ personality traits to emerge.”
Some critics of this hypothesis question whether the international variations in personality have more to do with the way people in different cultures interpret questions on personality tests. (For more on this debate, go to www.nytimes.com/tierneylab.) The critics would like to see more direct measures of personality traits, and so would Schmitt. But he notes that there’s already an intriguing trend reported for one trait — competitiveness — based on direct measures of male and female runners.
Competitive running makes a good case study because, to mix athletic metaphors, it has offered a level playing field to women the past two decades in the United States. Similar numbers of males and females run on high school and college teams and in road races. Female runners have been competing for equal shares of prize money and receiving nearly 50 percent more scholarship aid from Division I colleges than their male counterparts, according to the NCAA.
But these social changes have not shrunk a gender gap among runners analyzed by Robert Deaner, a psychologist at Colgate University, who classifies runners as relatively fast if they keep close to the pace of the world’s best runners of their own sex. When Deaner looks at, say, the top 40 finishers of each sex in a race, he typically finds two to four times as many relatively fast male runners as relatively fast female runners.
This large gender gap has persisted for two decades in all kinds of races — high school and college meets, elite and nonelite road races — and it jibes with other studies reporting that male runners train harder and are more motivated by competition, Deaner says. This enduring “sex difference in competitiveness,” he concludes, “must be considered a genuine failure for the socio-cultural conditions hypothesis” that the personality gap will shrink as new roles open for women.
If he and Schmitt are right, then men and women shouldn’t expect to understand each other much better anytime soon. Things could get confusing if the personality gap widens further as the sexes become equal. But then, maybe it was that allure of the mysterious other that kept Mars and Venus together so long on the savanna.



