Throughout history, women have been paid less than men; this male-female income disparity has been called the "gender wage gap."

While some differences in occupation, experience, and hours worked play a role in this gap, studies claim that even when those factors are controlled, a pay gap remains.

On the flip side, a recent study shows that if the gap exists at all, it favors women. Today, with the help of the Credit Score Blog, we take a look at this issue and give you a historical perspective.