A new study shows that mean working men make 18 percent more than nice men. Dr. Beth Livingston says, "We find that disagreeable men tend to make quite a bit more money than their agreeable counterpart."

What constitutes this behavior? The doctor says, "What we're talking about here is being a little bit more arrogant, self-absorbed, more-likely to be aggressive, and kind of step on people to get your way. A little bit more inter-personally rude."