Accounting for Anticipation Effects: An Application to Medical Malpractice Tort Reform
University of Chicago - Law School; University of Chicago Pritzker School of Medicine; Resources for the Future; National Bureau of Economic Research (NBER)
University of Chicago
October 17, 2011
U of Chicago Law & Economics, Olin Working Paper No. 578
While conducting empirical work, researchers sometimes observe changes in outcomes before adoption of a new treatment program. The conventional diagnosis is that treatment is endogenous. Observing changes in outcomes prior to treatment is also consistent, however, with anticipation effects. This paper provides a framework for comparing the different methods for estimating anticipation effects and proposes a new set of instrumental variables that can address the problem that subjects' expectations are unobservable. The paper uses this framework to analyze the effect of tort reform on physician supply and finds that accounting for anticipation effects doubles the estimated effect of tort reform.
Number of Pages in PDF File: 61
Date posted: October 22, 2011
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