I analyze structure and function in the network design of historical regimes of China and Western Europe to build a theory for the development of societies and states from endogenous mechanisms of social change. I show how their respective network structures evolved independently but share a...

There is a widespread idea that corporations have completely taken over invention and innovation processes throughout the twentieth century, thus becoming the main users of patent systems. However, recent studies suggest that, in spite of corporate expansion, independent invention is still...

We analyze the capacities of communities (or social networks) and courts to secure cooperation among heterogeneous, impersonal transactors. We find that communities and courts are complementary in that they tend to support cooperation for different types of transactions but that the existence of...

We analyze the capacities of communities (or social networks) and courts to secure cooperation among heterogeneous, impersonal transactors. We find that communities and courts are complementary in that they tend to support cooperation for different types of transactions but that the existence of...

This paper utilizes data on the presence of prominent individuals-that is, those with political (e.g., Members of Parliament) and aristocratic titles (e.g., lords)--on the boards of directors of English and Welsh banks from 1879 - 1909 to investigate whether the appointment of well-connected...

Pre-World War I Belgium was characterized by a strong concentration of power in the hands of a small elite with ties to business, banks, and politics. We find that political and upper class connections were widespread amongst listed firms, especially connections with the ruling political party....

This paper utilizes data on the presence of prominent individuals - that is, those with political (e.g., Members of Parliament) and aristocratic titles (e.g., lords) - on the boards of directors of English and Welsh banks from 1879-1909 to investigate whether the appointment of well-connected...

We combine information on social networks with medical records and survey data in order to examine how friends affect one's decision to get vaccinated against the flu. The random assignment of undergraduates to residential halls at a large private university allows us to estimate how peer...

We investigate the impact of actors' positions within regional innovator networks on their innovative performance. The networks of four selected regions are based on information on patent applicants and inventors. Count data regressions show positive effects on innovation of both the total...

We analyze the development of the German knowledge base measured by co-classifications of patents by German inventors and relate this technological development to changes in the structure of the underlying inventor networks. Our central hypothesis states that technologies which become more...