Identification and Estimation of Outcome Response with Heterogeneous Treatment Externalities
AbstractThis paper studies the identification and estimation of treatment response with heterogeneous spillovers in a network model. We generalize the standard linear-in-means model to allow for multiple groups with between and within-group interactions. We provide a set of identification conditions of peer effects and consider a 2SLS estimation approach. Large sample properties of the proposed estimators are derived. Simulation experiments show that the estimators perform well in finite samples. The model is used to study the effectiveness of policies where peer effects are seen as a mechanism through which the treatments could propagate through the network. When interactions among groups are at work, a shock on a treated group has effects on the non-treated. Our framework allows for quantifying how much of the indirect treatment effect is due to variations in the characteristics of treated peers (treatment contextual effects) and how much is because of variations in peer outcomes (peer effects).
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Bibliographic InfoPaper provided by Center for Policy Research, Maxwell School, Syracuse University in its series Center for Policy Research Working Papers with number 167.
Length: 39 pages
Date of creation: Apr 2014
Date of revision:
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More information through EDIRC
Networks; Heterogeneous Peer Effects; Spatial Autoregressive Model; Two-Stage Least Squares; Efficiency; Policy Evaluation; Treatment Response; Indirect Treatment Effect;
Find related papers by JEL classification:
- C13 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Estimation: General
- C21 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Cross-Sectional Models; Spatial Models; Treatment Effect Models
- D62 - Microeconomics - - Welfare Economics - - - Externalities
This paper has been announced in the following NEP Reports:
- NEP-ALL-2014-07-27 (All new papers)
- NEP-ALL-2014-07-28 (All new papers)
- NEP-ECM-2014-07-28 (Econometrics)
- NEP-NET-2014-07-28 (Network Economics)
- NEP-URE-2014-07-28 (Urban & Real Estate Economics)
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Liu, Xiaodong, 2013. "Estimation of a local-aggregate network model with sampled networks," Economics Letters, Elsevier, vol. 118(1), pages 243-246.
- H. Kelejian, Harry & Prucha, Ingmar R., 2001. "On the asymptotic distribution of the Moran I test statistic with applications," Journal of Econometrics, Elsevier, vol. 104(2), pages 219-257, September.
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