infonet-economy

Identification in most sample selection models depends on the independence of the regressors and the error terms conditional on the selection probability. All quantile and mean functions are parallel in these models; this implies that quantile estimators cannot reveal any - per assumption non-existing - heterogeneity. Quantile estimators are nevertheless useful for testing the…

The decomposition of gender or ethnic wage gaps into explained and unexplained components (often with the aim to assess labor market discrimination) has been a major research agenda in empirical labor economics. This paper demonstrates that conventional decompositions, no matter whether linear or non-parametric, are equivalent to assuming a (probably too) simplistic model of…

We show how instrumental variable and matching estimators can be combined in order to identify a broader array of treatment effects. Instrumental variable (IV) estimators are known to estimate effects only for the compliers, representing a subset of the entire population. By combining IV with matching, we can estimate the treatment effects for the always- and never-takers as well.…

This paper investigates regional differences in the perception of corruption and informal practices among Ukrainian firms. Using two different data sets from Ukraine we show that perceived corruption differs significantly across regions, even when taking into account the size, industry, workforce composition, and other characteristics of the firms based on propensity score matching.…

This paper develops a nonparametric methodology for treatment evaluation with multiple outcome periods under treatment endogeneity and missing outcomes. We use instrumental variables, pre-treatment characteristics, and short-term (or intermediate) outcomes to identify the average treatment effect on the outcomes of compliers (the subpopulation whose treatment reacts on the instrument…

Two of the main shocks that affect international trade are price and tariff changes. The present thesis covers these two topics. The first chapter shows that the transmission of international agricultural prices to local producers is asymmetric, with downward price movements being transmitted more strongly than upward price movements. This seems to be due to the market power that…

Cette thèse de doctorat est composée de trois chapitres. La principale contribution consiste à présenter deux cadres théoriques, paramétrique et non-paramétrique, pour faire des comparaisons et évaluations des concepts théoriques non-observables utilisés dans différents contextes tels que le bien-être, le développement, la santé et l'inégalité entre autres.Le premier chapitre…