This is a link to an old article I keep coming back to, so, to remember it, here is a blog post about it:
The Washington Post ran the following on March 10, 2014: "Catherine Rampell: Women should embrace the B’s in college to make more later"
Here is the killer figure:
The article writes:
"Claudia Goldin, an economics professor at Harvard, has been examining why so few women major in her field . The majority of new college grads are female, yet women receive only 29 percent of bachelor’s degrees in economics each year.
Goldin looked at how grades awarded in an introductory economics class affected the chance that a student would ultimately major in the subject. She found that the likelihood a woman would major in economics dropped steadily as her grade fell: Women who received a B in Econ 101, for example, were about half as likely as women who received A’s to stick with the discipline. The same discouragement gradient didn’t exist for men. Of Econ 101 students, men who received A’s were about equally as likely as men who received B’s to concentrate in the dismal science."