This paper examines the short and long-run average causal impact of catastrophic natural disasters on economic growth by combining information from comparative case studies. The counterfactual of the cases studied is assessed by constructing synthetic control groups, taking advantage of the fact...

After ten rounds of playing the prisoners' dilemma game, subjects were given the possibility of eliminating one of the two actions by plurality. Each subject voted on whether to keep all actions, eliminate D, or eliminate C. After voting, the subject participated in ten more rounds depending on...

The literature on aid and growth has not found a convincing instrumental variable to identify the causal effects of aid. This paper exploits an instrumental variable based on the fact that since 1987, eligibility for aid from the International Development Association (IDA) has been based partly...