Beginning in the mid-seventeenth century, England changed its system of raising revenues from tax farming, combined with the granting of monopolies, to direct collection within the government administration. Rents were then transferred from tax farmers and monopolists to the central government...

This paper studies the effect of surveillance cameras on crime in the Stockholm subway. Beginning in 2006, surveillance cameras were installed in the subway stations at different points in time. Difference-in-difference analysis reveals that the introduction of the cameras reduced crime by...

Although social pressure may affect the behavior of individuals, it is very hard to evaluate empirically. A soccer field is an attractive testing ground in the sense that both performance and social pressure by spectators are measurable. The drawback is that the number of spectators is an...

Democratic societies are challenged by various violent and organized groups, be they terrorists, gangs or organized hooligans. In exchange for offering an identity, leaders in such groups typically require members to be violent. We introduce a simple model to capture these stylized facts, and...