Men who are agreeable don't make as much money as disagreeable men do, and women make less, whether or not they are agreeable, reports LiveScience. According to the University of Notre Dame's Timothy Judge, that wage gap between disagreeable and agreeable men is about 18 percent while it is 5 percent between disagreeable and agreeable women. Judge's study is to be published this fall in the Journal of Personality and Social Psychology. "Women who appear to be tough or disagreeable get a special kind of scorn directed toward them," Judge says. "That sort of neutralizes the benefit that they might otherwise receive." Judge also studied why considered disagreeable men have a wage advantage, and found that they were viewed as strong leaders.