From the second page of the article: "Other studies have shown that these differences in extreme test scores correlate with later achievements in science and a

From the second page of the article: "Other studies have shown that these differences in extreme test scores correlate with later achievements in science and academia. Even when you consider only members of an elite group like the top percentile of the seventh graders on the SAT math test, someone at the 99.9 level is more likely than someone at the 99.1 level to get a doctorate in science or to win tenure at a top university. "Of course, a high score on a test is hardly the only factor important for a successful career in science, and no one claims that the right-tail disparity is the sole reason for the relatively low number of female professors in math-oriented sciences. There are other potentially more important explanations, both biological and cultural, including possible social bias against women."