The use of mediation as a dispute resolution process dates back to biblical times, but mediation as a formalized method to resolve disputes in the United States dates back only to the 19th Century.  A mediator is somebody who works with both sides in a dispute to help them reach an agreement.  The win-win thrust of mediation fits well with a mediator's core values of the dignity and worth of each person, the importance of human relationships, and the pursuit of social justice.  Evidence of this fit is seen in mediation outcomes.  Parties to mediation report a higher level of satisfaction with the process and lower financial costs than parties who employ the traditional adversarial system to resolve their disputes.