Das Konzept der Nettosozialleistungsquote (NSLQ) von W. Adema hat in jüngster Zeit einige zentrale Annahmen der vergleichenden Wohlfahrtsstaatenforschung erschüttert. Nicht nur die quantitative Dimension des Wohlfahrtsstaates in OECD-Ländern, sondern auch seine strukturelle Zusammensetzung...

Propensity score matching provides an estimate of the effect of a 'treatment' variable on an outcome variable that is largely free of bias arising from an association between treatment status and observable variables. However, matching methods are not robust against 'hidden bias' arising from...

This paper studies a general school choice problem with or without outside options. The Gale-Shapley student-proposing deferred acceptance mechanism (DA) has played a central role not only in theory but also in important practical applications. We show that in problems where some students cannot...