This paper examines the reflexive interplay between individual decisions and social forces to analyze the evolution of cooperation in the presence of "multi-directedness," whereby people's preferences depend on their psychological motives. People have access to multiple, discrete motives....

We examine how inequality in the endowment of secure wealth, mediated through voluntary public good provision, affects rent-seeking within and between groups. We model a scenario where two communities, each internally differentiated into rich, intermediate and poor segments, contest one another...