NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Jason Imbrogno

Tepper School of Business
Carnegie Mellon University
Pittsburgh, PA 15213

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NBER Working Papers and Publications

April 2009Estimation of Causal Effects in Experiments with Multiple Sources of Noncompliance
with John Engberg, Dennis Epple, Holger Sieg, Ron Zimmer: w14842
The purpose of this paper is to study identification and estimation of causal effects in experiments with multiple sources of noncompliance. This research design arises in many applications in education when access to oversubscribed programs is partially determined by randomization. Eligible households decide whether or not to comply with the intended treatment. The paper treats program participation as the outcome of a decision process with five latent household types. We show that the parameters of the underlying model of program participation are identified. Our proofs of identification are constructive and can be used to design a GMM estimator for all parameters of interest. We apply our new methods to study the effectiveness of magnet programs in a large urban school district. Our fin...
 
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