This paper studies the location decisions of political parties. We propose a game where agents vote according to ideology and valence, and media create candidates' charisma. The results we obtain show that candidates realize the power of media and therefore locate themselves at some point...

This paper explores a voluntary contribution game in the presence of warm-glow effects. There are many public goods and each public good benefits a different group of players. The structure of the game induces a bipartite network structure, where players are listed on one side and the public...

Are initial competitive advantages self-reinforcing, so that markets exhibit an endogenous tendency to be dominated by only a few firms? Although this question is of great economic importance, no systematic empirical study has yet addressed it. Therefore, we examine experimentally whether firms...