Public health officials have cited methamphetamine control as a tool with which to decrease HIV and other sexually transmitted infections, based on previous research that finds a strong positive correlation between methamphetamine use and risky sexual behavior. However, the observed correlation...

In many contests, players can influence the outcome through efforts in multiple activities, several of which can be chosen before others. In this paper, we develop a model of dynamic multi-activity contests. Players simultaneously choose efforts in long-run activities, observe each other’s...

We develop a counterterrorism model to analyze the effects of allowing a government agency to torture suspects when evidence of terrorist involvement is strong. We find that legalizing torture in strong-evidence cases has offsetting effects on agency incentives to counter terrorism by means...