I think people sometimes use science to keep traditional thinking in place. What I mean by this is that we all too often hear that girls are not good at math and calculation because of the way they use their brains. So this leads young girls to think that they don't use the part of their brains that control math and reasoning skills.
What ends up happening is girls don't give themselves a chance to be good at math because they are constantly told they are not going to be as good as boys at it, and this gives the girls an excuse not to excel. The brain is like any muscle in that the more you use it the stronger it gets. If you use the left frontal lobe it will get stronger, and if you use the right frontal lobe it will get stronger.