Language is a powerful coordination device. We generalize the cheap-talk approach to pre-play communication by way of introducing a meaning correspondence between messages and actions, and by postulating two axioms met by natural languages. Players have a lexicographic preference, second to...

In developing countries lacking legal enforcement, villagers may use implicit contracts to minimize crime. I construct a dynamic limited-commitment model, in which a thief cannot commit to forego stealing, but is induced to steal less by the promise of future gifts. Combining survey data on...

We examine why developed societies are monogamous while rich men throughout history have typically practiced polygyny. Wealth inequality naturally produces multiple wives for rich men in a standard model of the marriage market. However, we demonstrate that higher female inequality in the...

Research in sociology and ethics suggests that individuals adhere to social norms of behavior established by their peers. Within an agency framework, we model endogenous social norms by assuming that each agent’s cost of implementing an action depends on the social norm for that action,...

The connection between obtaining higher paying jobs and undertaking some seemingly irrelevant activity is interpreted as "social culture." In the context of a society trying to adopt a new technology, I show that by allowing the firms to give preferential treatment to workers based on some...