Differences among religious communities have motivated—and continue to motivate—many of the deadliest conflicts in human history. But how did political power and organized religion become so thoroughly intertwined? And how have religion and religiously motivated conflicts affected the...

Commitment problems are inherent to non-binding conflict resolution mechanisms, since an unsatisfied party can ignore the resolution and initiate conflict. We provide experimental evidence suggesting that even in the absence of binding contractual agreements individuals often avoid conflict by...

A fundamental question of economic and technological history is why some civilizations adopted new and important technologies and others did not. In this paper, we construct a simple political-economy model that suggests that rulers may not accept a productivity-enhancing technology when it...

Why do sudden and massive social, economic, and political changes occur when and where they do? Are there institutional preconditions that encourage such changes when present and discourage such changes when absent? I employ a general model which suggests that cascades which induce massive...