I was getting lunch with a female coworker/friend last week and we ended up talking about this very topic. We work for a software company and she's in sales. She recounted that back when she first started, other salespeople treated her like crap and blamed her for things that weren't her fault. Even when she exceeded her daily or weekly goals, she didn't receive any praise. Whereas the male salespeople who started around the same time as her were getting rewarded for performing half as well. It was only after she dominated the quarterly metrics over and over that people started to pay her any attention. Nowadays she's very highly regarded, but had to work extra hard to get that.