There is a wide range of magazines, newspapers, TV shows, and websites providing information on products based on product reviews or expert opinions. A natural question is, whether these reviews and expert opinions have effects on product sales. There is a small but growing literature in...

This paper investigates the existence of a possible media bias by analyzing the impact of automobile manufacturer’s advertisements on automobile reviews in a leading German car magazine. By accounting for both endogeneity and sample selection using a two-step procedure, we find a positive...

The paper examines the impact of immigration on innovation. We exploit an immigrant placement policy which took place during the early nineties in Germany when large numbers of so called ethnic Germans entered the country. This allows us to overcome the potential bias of endogenous location...