The Robust Relationship Between US Food Aid and Civil Conflict
复现了Nunn和Qian关于美国粮食援助增加受援国内战风险的研究，并通过半参数内生估计方法验证其结论的稳健性，对政策制定者评估援助效果有参考价值。
Summary Humanitarian aid has long been considered an important means to reduce hunger and suffering in developing countries. A recent finding by Nunn and Qian (US food aid and civil conflict, American Economic Review 2014; 104 : 1630–1666) that such aid from the US increases the incidence and duration of civil conflict in recipient countries, however, questions the effectiveness of this policy and poses a serious policy concern for the US government. We revisit this issue by conducting a successful replication study of the results in their paper. In order to further scrutinize their claims that a heterogeneous effect of food aid on conflict is not present, we employ a semiparametric endogenous estimation procedure. We show that their parametric models cannot be rejected and argue that their findings are robust. Copyright © 2016 John Wiley & Sons, Ltd.