Vestiges of prejudice.
It is a well-established fact that men as a group still have the benefit of higher wages and faster promotions. In the United States in 2005, for example, women employed full-time earned 81 cents for every dollar that men earned. Is this true because of discrimination or simply because, with fewer family demands placed on them and longer careers on average, men are able to gain superior qualifications? Literally hundreds of correlational studies by economists and sociologists have attempted to find the answer.