“What doomed the women in Estes’s lab was not their actual ability to do well on the tests. They were as able as the men were. What held them back was the choice they made not to try.
The advice implicit in such findings is hardly unfamiliar: to become more confident, women need to stop thinking so much and just act.”
Found in this interesting article on the Confidence Gap between men and women in the workplace. I also recommend the book Lean In for women who want to know more about leadership and how we hold ourselves back!