Recently, several studies have analysed active labour market policies by using a recently proposed matching estimator for multiple programmes. Since there is only very limited practical experience with this estimator, this paper checks its sensitivity with resprect to issues that are of...

German unification led to a drastic decline in the East German birth rate. Recent explanations of this phenomena point to the importance of an adjustment process of the East German pattern with often early births to the West German pattern with fairly late births. The paper presents an update on...