Policy Heterogeneity in Empirical Corporate Finance
56 Pages Posted: 14 Apr 2013 Last revised: 17 Dec 2014
Date Written: November 15, 2013
Standard econometric methods can overlook the issue of heterogeneity in corporate policy making, generating biased estimates. We propose ways to identify and address the firm policy heterogeneity bias in practice. In doing so, we introduce a new test determining whether standard firm-fixed effects estimations are subject to heterogeneity biases in corporate applications. Examining investment models to showcase our approach, we show that heterogeneity bias-robust methods identify cash flow as a more important driver of investment than previously reported. Our study demonstrates analytically, via simulations, and empirically the importance of carefully accounting for firm heterogeneity in drawing conclusions about corporate policy.
Keywords: fixed effects, estimation, slope heterogeneity
JEL Classification: G31, C23
Suggested Citation: Suggested Citation