We exploit rules of class formation to identify the causal effect of increasing the number of immigrants in a classroom on natives test scores, keeping class size constant (Pure Composition Effect). We explain why this is a relevant policy parameter although it has been neglected so far. We show...

We exploit rules of class formation to identify the causal effect of increasing the number of immigrants in a classroom on natives test scores, keeping class size constant (Pure Composition Effect). We explain why this is a relevant policy parameter although it has been neglected so far. We show...

We evaluate the effects of different short-term training programs on the employment chances of immigrant and native welfare recipients in Germany. In particular, we investigate whether program effects differ between both groups and what might cause these potential differences. In a first step,...

This policy analysis paper explores the implications for the host country population of alternative immigration policies. The two immigration options considered are a policy based on admitting primarily high-skilled workers and another that has the effect of admitting primarily low-skilled...

In the early 1970s, E.F. Schumacher criticised western industrial countries in the face of emerging globalisation by using a term generated by Leopold Kohr: "Small is beautiful." Seen against the progressing enlargement of the EU we need to ask whether and to what extent small is still...