{"title":"Exogenous Treatment and Endogenous Factors: Vanishing of Omitted Variable Bias on the Interaction Term","authors":"O. Nizalova, Irina Murtazashvili","doi":"10.1515/jem-2013-0012","DOIUrl":null,"url":null,"abstract":"Abstract Whether interested in the differential impact of a particular factor in various institutional settings or in the heterogeneous effect of policy or random experiment, the empirical researcher confronts a problem if the factor of interest is correlated with an omitted variable. This paper presents the circumstances under which it is possible to arrive at a consistent estimate of the mentioned effect. We find that if the source of heterogeneity and omitted variable are jointly independent of policy or treatment, then the OLS estimate on the interaction term between the treatment and endogenous factor turns out to be consistent.","PeriodicalId":36727,"journal":{"name":"Journal of Econometric Methods","volume":"5 1","pages":"71 - 77"},"PeriodicalIF":0.0000,"publicationDate":"2012-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/jem-2013-0012","citationCount":"175","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Econometric Methods","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1515/jem-2013-0012","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Mathematics","Score":null,"Total":0}
引用次数: 175
Abstract
Abstract Whether interested in the differential impact of a particular factor in various institutional settings or in the heterogeneous effect of policy or random experiment, the empirical researcher confronts a problem if the factor of interest is correlated with an omitted variable. This paper presents the circumstances under which it is possible to arrive at a consistent estimate of the mentioned effect. We find that if the source of heterogeneity and omitted variable are jointly independent of policy or treatment, then the OLS estimate on the interaction term between the treatment and endogenous factor turns out to be consistent.
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