External Treatment Effects and Program Implementation Bias / Tomas J. Philipson.

By:

Philipson, Tomas J

Contributor(s):

National Bureau of Economic Research

Material type: Text

TextSeries: Technical Working Paper Series (National Bureau of Economic Research) ; no. t0250.Publication details: Cambridge, Mass. National Bureau of Economic Research 2000.Description: 1 online resource: illustrations (black and white)Online resources:

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Abstract: This paper discusses the definition and identification of external treatment effects and experimental designs capable of detecting these effects. External effects occur when the outcome of a given individual is affected by the treatment assignments of other individuals. The paper argues that two-stage randomization schemes, which randomize allocation of treatments across communities and randomizes the treatments themselves within communities, are useful for identifying private and external treatment effects. The importance of external treatment effects are illustrated in the context of several health economics applications: the impact of R&D subsidies, smoking prevention programs for youth, and the evaluation of HIV-prevention programs currently taking place in Africa.

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Item type	Home library	Collection	Call number	Status	Date due	Barcode	Item holds
Working Paper	Biblioteca Digital	Colección NBER	nber t0250 (Browse shelf(Opens below))	Not For Loan

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Previous	nber t0247 A Note on Longitudinally Matching Current Population Survey (CPS) Respondents /	nber t0248 Estimation of Limited-Dependent Variable Models with Dummy Endogenous Regressors: Simple Strategies for Empirical Practice /	nber t0249 On Optimal Instrumental Variables Estimation of Stationary Time Series Models /	nber t0250 External Treatment Effects and Program Implementation Bias /	nber t0251 Efficient Estimation of Average Treatment Effects Using the Estimated Propensity Score /	nber t0252 Local Instrumental Variables /	nber t0253 Estimating Euler Equations /	Next

January 2000.

This paper discusses the definition and identification of external treatment effects and experimental designs capable of detecting these effects. External effects occur when the outcome of a given individual is affected by the treatment assignments of other individuals. The paper argues that two-stage randomization schemes, which randomize allocation of treatments across communities and randomizes the treatments themselves within communities, are useful for identifying private and external treatment effects. The importance of external treatment effects are illustrated in the context of several health economics applications: the impact of R&D subsidies, smoking prevention programs for youth, and the evaluation of HIV-prevention programs currently taking place in Africa.