We study the evolution of the social norm of "cooperation" in a dynamic environment. Each agent lives for two periods … completely drives equilibrium play, leading to a social norm of high or low cooperation. In intermediate cases, the impact of … leverage their greater visibility to influence expectations of future agents and overturn social norms of low cooperation. We …

conflict when defense capability is fixed, but may allow for security and prosperity when defense capability is endogenous … of conflict and stagnation. We illustrate the model by analyzing the rise of civilization in Sumeria and Egypt, the first …

We propose a model of cycles of distrust and conflict. Overlapping generations of agents from two groups sequentially … a sequence of bad actions originated. Assuming that both sides are not extremists, spirals of distrust and conflict get … this mechanism can be useful in interpreting cycles of ethnic conflict and international war, and how it also emerges in …