Gradualism is common in international cooperation, as states begin with limited cooperation and choose more ambitious targets slowly over time. However, most models of international cooperation are static and thus cannot explain gradualism. I show that when states can implement domestic reforms...

How do individual agents enact the institutions that govern collective behavior in a social situation? How do individuals come to share self-enforcing expectations about collective behavior, so that societal rules and constraints have an effect on individual choice? Conventional accounts, such...