This paper studies the spread of the Black Death as a proxy for the ow of medieval trade between 1346 and 1351. The Black Death struck most areas of Europe and the wider Mediterranean. Based on a modified version of the gravity model, we estimate the speed (in kilometers per day) of transmission...

Germany is widely known for its high-quality vocational education and training (VET) system. The two key features of that system are (a) firm-based training programs accompanied by a schoolbased component (of one to two days per week), in which apprentices acquire upper secondary general...

In a laboratory experiment designed to capture key aspects of the interaction between physicians and patients, we study the effects of medical insurance and competition in the guise of free choice of physician, including observability of physicians' market shares. Medical treatment is an example...

In a laboratory experiment designed to capture key aspects of the interaction between physicians and patients in a stylized way, we study the effects of medical insurance and competition in the guise of free choice of physician. Medical treatment is an example of a credence good: only the...

Does large-scale refugee immigration affect crime rates in receiving countries? We address this question based on the large and unexpected refugee inflow to Germany that peaked in 2015-2016. Arriving refugees were dispersed across the country based on a binding dispersal policy, yet we show that...