endogenous covariates. We also provide a test for exogeneity which indicates whether endogeneity is in fact a matter or not. In … contrast to other methods proposed in the literature which deal with sample selection and endogeneity, our approach is … study and an empirical example are presented which indicate that not accounting for endogeneity in sample selection models …

factors potentially influencing the concentration performance relationship, such as endogeneity, curvilinearity, and …

explanatory variable, involve endogeneity. Two possible ways of addressing this are the instrumental variables method and another … compare how both these methods eliminate endogeneity in the estimated production function and thus improve the accuracy of …