In Germany the foreign born population is made up of foreigners and so called "ethnic Germans" who migrated from eastern European countries to Germany. While the first group is confronted with problems arising from the typical German concept of ethnicity and citizenship, the latter are entitled...

To the best of our knowledge, most of the few methodological studies which analyze the impact of faked interviews on survey results are based on "artificial fakes" generated by project students in a "laboratory environment". In contrast, panel data provide a unique opportunity to identify data...

Based on the hypothesis that microdata are of crucial importance for internationally competitive economic research and scientific advice in economic and social policy, the authors develop various proposals for an improved data supply for empirical work in Germany. Present shortcomings are mainly...