Replication Data for: Improving Treatment Comparability in an Instrumental Variables Design: Replication and Extension of Hangartner et. al 2018

In "Does Exposure to the Refugee Crisis Make Natives More Hostile?" Hangartner et al. (2018) examine whether exposure to the refugee crisis increases levels of hostility to refugees among natives. They investigate this question using an original survey on the Greek islands in the Aegean Sea conducted during the Syrian refugee crisis and employ instrumental variable techniques to bolster claims of exogeneity. In this paper, we replicate and extend their results. We call into question the validity of their instrument and demonstrate how using matching techniques and distance filtering alters their findings.

在《"难民危机接触是否会让本土民众更具敌意？"》一文中，汉加特等人（Hangartner et al.，2018）探究了难民危机接触是否会提升本土民众对难民的敌意水平。该研究依托叙利亚难民危机期间在爱琴海希腊诸岛开展的原创性调查展开分析，并采用工具变量法（instrumental variable techniques）为其外生性论断提供支撑。本文对该研究的结果进行了复现与拓展：我们对其所用工具变量的有效性提出了质疑，并阐明了采用匹配法（matching techniques）与距离过滤法（distance filtering）如何改变了原研究的结论。