On the Specification of Propensity Scores: with an Application to the WTO-Environment Debate

dc.contributor.authorMillimet, Daniel
dc.contributor.authorTchernis, Rusty
dc.date.accessioned2006-10-17T15:42:36Z
dc.date.available2006-10-17T15:42:36Z
dc.date.issued2006-10-17
dc.description.abstractThe use of propensity score methods for program evaluation with non-experimental data typically requires the propensity score be estimated, often with a model whose specification is unknown. While theoretical results suggest that estimators utilizing more flexible propensity score specifications perform better, this has not filtered into applied research. Here, we provide Monte Carlo evidence indicating the benefits of over-specifying the propensity score when using weighting estimators, as well as using normalized weights. We illustrate these results with an application assessing the environmental effects of GATT/WTO membership. We find that membership has a mixed impact, and that under-fitting the propensity score yields misleading inference in several cases.en
dc.format.extent724356 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://papers.ssrn.com/sol3/papers.cfm?abstract_id=918454en
dc.identifier.urihttp://www.iub.edu/~caepr/RePEc/PDF/CAEPR2006-013.pdfen
dc.identifier.urihttps://hdl.handle.net/2022/361
dc.language.isoen_USen
dc.relation.ispartofseriesCAEPR Working Paperen
dc.relation.ispartofseries2006-013en
dc.relation.isversionofThis paper can also be found on SSRN.en
dc.relation.isversionofThis paper can also be found on RePEc.en
dc.subjectCAEPRen
dc.subjectCenter for Applied Economics and Policy Researchen
dc.subjectTreatment Effectsen
dc.subjectPropensity Scoreen
dc.subjectSpecificationen
dc.subjectWTOen
dc.subjectEnvironmenten
dc.titleOn the Specification of Propensity Scores: with an Application to the WTO-Environment Debateen
dc.typeWorking Paperen

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