Building on the idea that members of religious communities insure each other against some idiosyncratic risks, we argue that religious communities should be more widespread where populations face greater common risk. Our empirical analysis exploits rainfall risk as a source of common...

Using a rich dataset of territories and cities of the Holy Roman Empire in the 16th century, this paper investigates the determinants of adoption and diffusion of Protestantism as a state religion. A territory’s distance to Wittenberg, the city where Martin Luther taught, is a major...

Many theories, most famously Max Weber’s essay on the “Protestant ethic,” have hypothesized that Protestantism should have favored economic development. With their considerable religious heterogeneity and stability of denominational affiliations until the 19th century, the German Lands of...

This paper analyzes the relationship between ethnic fractionalization, polarization, and conflict. In recent years many authors have found empirical evidence that ethnic fractionalization has a negative effect on growth. One mechanism that can explain this nexus is the effect of ethnic...

This paper ia an attempt to clarify the relationship between fractionalization, polarization and conflict. The literature on the measurement of ethnic diversity has taken as given that the proper measure for heterogeneity can be calculated by using the fractionalization index. This index is...

Social capital – a dense network of associations facilitating cooperation within a community – typically leads to positive political and economic outcomes, as demonstrated by a large literature following Putnam. A growing literature emphasizes the potentially "dark side" of social capital....

We develop a two-sided matching model to analyze collaboration between heterogeneous academics and firms. We predict a positive assortative matching in terms of both scientific ability and affinity for type of research, but negative assortative in terms of ability on one side and affinity in the...

We study the impact of university-industry research collaborations on academic output, in terms of productivity and direction of research. We report findings from a longitudinal dataset on all the researchers from the engineering departments in the UK in the last 20 years. We control for the...