The Becker (1968) model of crime establishes the importance of the probability of apprehension as a key factor in a rational individual’s decision to commit a crime. In this respect, most empirical studies have used U.S. data to study the effects of more police officers on crime rates. We add...

This paper looks carefully at situations in which public and private protection are complementary, that is, when private protection must be coordinated with public protection to be effective. For example, home alarms deter theft by being connected to a local police station: if the police do not...