文章基本信息

标题：A Tutorial on the Use of Differences-in-Differences in Management, Finance, and Accounting
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作者：Rafael Felipe Schiozer ; Frederico Abou Mourad ; Theo Cotrim Martins 等
期刊名称：RAC - Revista de Administração Contemporânea
印刷版ISSN：1415-6555
电子版ISSN：1982-7849
出版年度：2021
卷号：25
期号：1
页码：200067-200086
DOI：10.1590/1982-7849rac2021200067
出版社：Associação Nacional de Pós-Graduação e Pesquisa em Administração
摘要：Context: natural experiments or quasi-experiments have become quite popular in management research. The differences-in-differences (DiD) estimator is possibly the workhorse of these techniques.Objective: the goal of this paper is to provide a tutorial that serves as practical guide for researchers considering using natural experiments to make causal inferences.Methods: we discuss the DiD advantages, concerns, and tests of validity. We also provide an application of the technique, in which we discuss the effect of government guarantees on banks’ degree of risk, using the 2008 financial crisis as a natural experiment. The database used, as well as the Stata and the R scripts containing the analyses, are available as online appendices.Conclusion: DiD may be used to tackle endogeneity concerns when treatment assignment is random.
关键词：Differences-in-differences; natural experiments; endogeneity; causal inference.
其他关键词：Diferenças em diferenças; experimentos naturais; endogeneidade; inferência causal.