But in my experience, smart and talented women rarely realize that one of the toughest hurdles they’ll have to overcome to be successful lies within. Compared with our male colleagues, we judge our own abilities not only more harshly but fundamentally differently. Understanding why we do it is the first step to righting a terrible wrong. And to do that, we need to take a step back in time.

Chances are good that if you are a successful professional today, you were a pretty bright fifth grade girl. My graduate advisor, psychologist Carol Dweck (author of “Mindset“) conducted a series of studies in the 1980s, looking at how Bright Girls and boys in the fifth grade handled new, difficult and confusing material.

She found that Bright Girls, when given something to learn that was particularly foreign or complex, were quick to give up; the higher the girls’ IQ, the more likely they were to throw in the towel. In fact, the straight-A girls showed the most helpless responses. Bright boys, on the other hand, saw the difficult material as a challenge, and found it energizing. They were more likely to redouble their efforts rather than give up.

http://www.huffingtonpost.com/heidi-grant-halvorson-phd/girls-confidence_b_828418.html