The Lion in Summers

Steven Pinker, himself a Harvard professor, looks at the Lawrence Summers donnybrook and attempts to reinject some sanity:

Many of Summers's critics believe that talk of innate gender differences is a relic of Victorian pseudoscience, such as the old theory that cogitation harms women by diverting blood from their ovaries to their brains. In fact, much of the scientific literature has reported numerous statistical differences between men and women. As I noted in The Blank Slate, for instance, men are, on average, better at mental rotation and mathematical word problems; women are better at remembering locations and at mathematical calculation. Women match shapes more quickly, are better at reading faces, are better spellers, retrieve words more fluently, and have a better memory for verbal material. Men take greater risks and place a higher premium on status; women are more solicitous to their children.

Of course, just because men and women are different does not mean that the differences are triggered by genes. People develop their talents and personalities in response to their social milieu, which can change rapidly. So some of today's sex differences in cognition could be as culturally determined as sex differences in hair and clothing. But the belief, still popular among some academics (particularly outside the biological sciences), that children are born unisex and are molded into male and female roles by their parents and society is becoming less credible.

Many sex differences are universal across cultures (the twentieth-century belief in sex-reversed tribes is as specious as the nineteenth-century belief in blood-deprived ovaries), and some are found in other primates. Men's and women's brains vary in numerous ways, including the receptors for sex hormones. Variations in these hormones, especially before birth, can exaggerate or minimize the typical male and female patterns in cognition and personality. Boys with defective genitals who are surgically feminized and raised as girls have been known to report feeling like they are trapped in the wrong body and to show characteristically male attitudes and interests. And a meta-analysis of 172 studies by psychologists Hugh Lytton and David Romney in 1991 found virtually no consistent difference in the way contemporary Americans socialize their sons and daughters. Regardless of whether it explains the gender disparity in science, the idea that some sex differences have biological roots cannot be dismissed as Neanderthal ignorance.