Charles Darwin (1874) stated that "women are less selfish but men are more competitive". Very recent papers (Eckel & Grossman, 1998, 2001 or Andreoni and Vesterlund 2001, among others) have shown the relevance of gender in altruism in both ultimatum and dictator games. In this paper we analyze...

This paper expands the micro-foundations of the traditional greed and grievance non-cooperative model of civil conflict between a government and a rebel group. First, the paper's model allows for greed and grievance to be orthogonal, so that they may affect each other. Second, the model allows...