This paper explores the potential of an approach suggested by Manski of obtaining nonparametric bounds for treatment effects in evaluation studies without knowledge of the participation process. The practical concern is the effects of continuous vocational training in East Germany. The empirical...

Studies examining the effectiveness of welfare-to-work programs present findings that are mixed and sometimes at odds, in part due to research design, data, and methodological limitations of the studies. We aim to substantially improve on past approaches to estimate program effectiveness by...

This article investigates the impact of continuing education and training for adults on labour market performance in Germany, Denmark, and the United Kingdom. The central hypothesis is that training outcomes differ across countries, and that this heterogeneity in outcomes is due to institutional...