Statistical data from the Independent Commission and the World Anti-Doping Agency (WADA) indicate that Russia is the worst violator of anti-doping rules. Multivariate statistical models find evidence that Russia performed unexpectedly well at the London Games, that the cross-country pattern of...

We analyze the doping behavior of heterogeneous athletes in an environment of private information. In a n-player strategic game, modeled as an all-pay auction, each athlete has private information about his actual physical ability and choses the amount of performance-enhancing drugs. The use of...

Individuals who compete in a contest-like situation (for example, in sports, in promotion tournaments, or in an appointment contest) may have an incentive to illegally utilize resources in order to improve their relative positions. We analyze such doping within a tournament game between two...

Background: The opioid crisis is a complex problem associated with significant economic costs for healthcare systems and society. Simulation models have been developed to understand its complexity and to evaluate the potential costs of different strategies to address this problem.Methods: A...

A number of supply and demand-side indicators provide support for heroin's 're-incubation' in an era of crack cocaine's decline. The present paper assesses the extent to which these and other trends converge with reports of heroin market participants operating on the streets of a large...

Drug addiction reflects abnormal operation of normal neural circuitry. More than physical dependence, addiction represents changes in the brain that lead to increased craving and diminished capacity for the control of impulses. Given the growing biological understanding of addiction, it is...