The AAUW report begins with the familiar claim that women earn 77 cents to a man's dollar - a 23% wage gap. Later in the report, though, they admit that
After accounting for college major, occupation, industry, sector, hours worked, workplace flexibility, experience, educational attainment, enrollment status, GPA, institution selectivity, age, race/ethnicity, region, marital status, and number of children, a 5 percent difference in the earnings of male and female college graduates one year after graduation was still unexplained.Many factors could go into this 5 percent gap, including discrimination. However, other research has found that woman are more reluctant to negotiate their wages, and men are more likely to ask for more than they were offered.
The AAUW report goes on to cite another study that shows the wage gap growing for college-educated women and men in the decade after college. They write
A similar analysis of full-time workers 10 years after college graduation found a 12 percent unexplained difference in earnings.However, that "similar analysis" leaves out the crucial difference between men and women in their 20s - women are likely to leave or cut back on work when they have children, while men are likely to work more when they have children.
As Susan Pinker argued in The Sexual Paradox, the more choice women have, the more they differ from men. American college-educated women in the 21st century are among the freest to choose of any group of women in the history of the world.