The category of conflict encompasses not only war but also crime, litigation, strikes and lockouts, and redistributive politics. Exchange theory and conflict theory constitute two coequal branches of economic analysis, the first based upon contract and mutual gain, the second upon contest for...

This paper presents a formal theory of reciprocity. Reciprocity means that people reward kind actions and punish unkind ones. The theory takes into account that people evaluate the kindness of an action not only by its consequences but also by the intention underlying this action. The theory...