framework that has been developed by Borjas et al. (1992) on the selectivity of internal migrants with respect to skills has to … are robust and significant. The paper may thus be able to explain why earlier attempts to explain skill selectivity in …

joint analysis of the determinants of the two decisions and corrects for the sample selectivity that is intrinsic in the … analysis of cooperative R&D. The results indicate the need to explicitly consider the selectivity issue in the empirical …

and the decision functions, for each level of education, is allowed and we correct for the potential selectivity bias. We … find empirical support for the existence of selectivity bias as the errors of the earnings functions are correlated with … of selectivity mechanisms that renders the decisions actually taken by individuals optimal in terms of comparative …

selectivity of Brazilian workers into formal employment. The links between firm performance and wage components in Brazil resemble …

selectivity. We find that for both smoking decisions true state dependence is in general much smaller when unobserved individual …

indicate that Latin mothers are more likely to return to work and to report more hours of work than their German counterparts …