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雷达卡
摘要翻译：
我建立了一个潜在结果框架来分析溢出效应使用工具变量。我描述了人群依从性类型的特征，在这种环境中，治疗的接受和结果都可能发生溢出，并为确定依从性类型的边际分布提供了条件。我表明，意图治疗(ITT)参数集合了不同遵约类型的多种直接和溢出效应，因此与因果可解释参数没有明确的联系。此外，通过第一级estimands重新标度ITT参数通常恢复平均效应的加权组合，其中权重之和大于1。然后分析了单边不遵守情况下的因果直接效应和溢出效应的识别，并表明这些效应可以用2SLS估计。我用一个关于社会互动和投票行为的实验数据来说明所提出的方法。
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英文标题：
《Causal Spillover Effects Using Instrumental Variables》
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作者：
Gonzalo Vazquez-Bare
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最新提交年份：
2021
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分类信息：
一级分类：Economics 经济学
二级分类：Econometrics 计量经济学
分类描述：Econometric Theory, Micro-Econometrics, Macro-Econometrics, Empirical Content of Economic Relations discovered via New Methods, Methodological Aspects of the Application of Statistical Inference to Economic Data.
计量经济学理论，微观计量经济学，宏观计量经济学，通过新方法发现的经济关系的实证内容，统计推论应用于经济数据的方法论方面。
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英文摘要：
I set up a potential-outcomes framework to analyze spillover effects using instrumental variables. I characterize the population compliance types in a setting in which spillovers can occur on both treatment take-up and outcomes, and provide conditions for identification of the marginal distribution of compliance types. I show that intention-to-treat (ITT) parameters aggregate multiple direct and spillover effects for different compliance types, and hence do not have a clear link to causally interpretable parameters. Moreover, rescaling ITT parameters by first-stage estimands generally recovers a weighted combination of average effects where the sum of weights is larger than one. I then analyze identification of causal direct and spillover effects under one-sided noncompliance, and show that these effects can be estimated by 2SLS. I illustrate the proposed methods using data from an experiment on social interactions and voting behavior.
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PDF链接：
https://arxiv.org/pdf/2003.06023
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