It is often argued that stricter immigration policies have a positive selection effect on immigration from the perspective of the host country, as it makes migration less attractive for less-skilled individuals. However, there is relatively little evidence confirming this argument. The aim of...

The aim of this paper is to discuss how the efficiency conclusions obtained from DEA are affected when they are complemented with bootstrap confidence intervals. Bootstrap approximations to DEA estimator distribution functions have not been practically used in empirical analysis, despite being...

The Koenker and D'Orey (Econometrica, 46, pp. 43-61, 1987) algorithm is compared with the Minimum Distance estimator proposed by Buchinsky (Econometrica, 62, pp. 405-58, 1994) to estimate the parameters of conditional quantiles specified as linear models.