We analyze the structure of a society driven by power relations. Our model has an exogenous power relation over the set of coalitions of agents. Agents determine the social order by forming coalitions. The power relations determine the ranking of agents in society for any social order. We study...

A model of group decision-making is studied, in which one of two alternatives must be chosen. While group members differ in their valuations of the alternatives, everybody prefers some alternative to disagreement. Our model is distinguished by three features: private information regarding...

In this review, we survey the economics literature on echo chambers. We identify echo chambers as arising from a combination of two phenomena: (a) the choice of individuals to segregate with like-minded ones, i.e., the creation of chambers, and (b) behavioral biases that induce polarization when...