This paper explores the impact of increasing drug enforcement on the violent crime rate in the context of spatial competition in illicit drug markets. Violence is an important aspect of competition in illicit markets because disputes cannot be resolved in the courts. A model of spatial...

It seems that America names a Tsar whenever we decide to focus on a policy problem, as though that title is associated with effective policies which are well administered. The appointment of a drug Tsar, the implicit policies that are associated with the War on Drugs, and the political...

Recent advances in multivariate time series modeling techniques have produced statistical concepts and methods that may surpass many of the economic and antitrust market delineation procedures currently in use. The appropriateness of cointegration tests and vector error correction models for...