Why Can’t a Woman Be More Like a Man?

Women now earn 57 percent of bachelors degrees and 59 percent of masters degrees. According to the Survey of Earned Doctorates, 2006 was the fifth year in a row in which the majority of research Ph.D.’s awarded to U.S. citizens went to women. Women earn more Ph.D.’s than men in the humanities, social sciences, education, and life sciences. Women now serve as presidents of Harvard, MIT, Princeton, the University of Pennsylvania, and other leading research universities. But elsewhere, the figures are different. Women comprise just 19 percent of tenure-track professors in math, 11 percent in physics, 10 percent in computer science, and 10 percent in electrical engineering. And the pipeline does not promise statistical parity any time soon: women are now earning 24 percent of the Ph.D.’s in the physical sciences—way up from the 4 percent of the 1960s, but still far behind the rate they are winning doctorates in other fields. “The change is glacial,” says Debra Rolison, a physical chemist at the Naval Research Laboratory.