The usual decomposition of effects in corner solution models into extensive and intensive margins is generally incompatible with a causal interpretation. This paper proposes a decomposition based on the joint distribution of potential outcomes which is meaningful in a causal sense. The...

Focusing on seven bilateral donors over a 25 year period, the paper answers 4 questions related to aid allocation practice. Questions one and two examine allocation differences between donors and time periods. Questions three and four relate to changes in poverty and policy selectivity. To...

Based on the empirical firm growth literature and on heterogeneous (microeconomic) adjustment models, this paper empirically investigates the impact of European industry fluctuations and domestic business cycles on the growth performance of European firms. Since the implementation of the Single...

Stichproben-Modelle, wie beispielsweise Heckman- und Heckit-Modelle, werden zunehmend von Politikwissenschaftlern benutzt. Sie bergen jedoch gewisse Probleme. Viele der Fragen, die von empirischen Politikwissenschaftler untersucht werden, könnte man - sowohl aus inhaltlichen als auch aus...

Introduction: Common approaches in cost-effectiveness analyses do not adjust for confounders. In nonrandomized studies this can result in biased results. Parametric models such as regression models are commonly applied to adjust for confounding, but there are several issues which need to be...