This paper studies the design of enforcement policies to detect and deter harmful short-term activities committed by groups of injurers. With an ordered-leniency policy, the degree of leniency granted to an injurer who self-reports depends on his or her position in the self-reporting queue. By...

This paper reports the results of an experiment designed to assess the ability of an enforcement agency to detect and deter harmful short-term activities committed by groups of injurers. With ordered-leniency policies, early cooperators receive reduced sanctions. We replicate the strategic...

We investigate the effects of civic norms and associational networks on crime rates. Civic norms may attach guilt and shame to criminal behaviour, thus increasing its opportunity cost. Associational networks may increase returns to non-criminal activities and raise detection probabilities, but...

Given the large number of possible specification choices available to researchers when estimating the causal effect of concealed-carry laws on crime, one can generate considerable variation across models in the estimated effects of these laws. However, the growing sophistication in the...