A team led by Corinne A. Moss-Racusin asked 127 professors of biology, chemistry, and physics at major research universities to rate the competency, hireability, and their own willingness to mentor of a grad school applicant on a scale of 1 to 7. Every professor got the same application except for one small difference: sometimes the aspiring scientist was named "John" and sometimes "Jennifer." Faculty—both men and women—rated the male student higher for everything. The chart above shows the average rating given to "John" or "Jennifer," whom the professors believed to be a real student who would read their evaluations.
H/T Daily Dish