Addressing Unobserved Selection Bias in Accounting Studies: The Bias Minimization Method

• Autores: Michael J. Peel
• Localización: European accounting review, ISSN 0963-8180, Vol. 27, Nº 1, 2018, págs. 173-183
• Idioma: inglés
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• Resumen

  • This note explains the minimum-biased estimator (MBE), which accounting researchers can use to analyze the robustness of regression or propensity score-matched treatment estimates to unobserved selection (endogeneity) bias. Based on the principles of the Heckman treatment model, the MBE entails estimating matched treatment effects within a range of propensity scores that minimizes unobserved selection bias. A major advantage of the MBE is that an instrumental variable is not required. The potential utility of the MBE in accounting studies is highlighted, and a familiar empirical illustration is provided.