Bright Girls v. Bright Boys

"Bright Girls were much quicker to doubt their ability, to lose confidence and to become less effective learners as a result....Researchers have uncovered the reason for this difference in how difficulty is interpreted, and it is simply this: More often than not, Bright Girls believe that their abilities are innate and unchangeable, while bright boys believe that they can develop ability through effort and practice."

This all starts from quite a young age and relates to how we praise or correct behavior differently in boys and girls.  Interesting?  Read more or buy this book.