Antimicrobial resistance (AMR) is becoming a major global public health threat and has begun to command attention from European and US policy makers. An initial focus on monitoring AMR and conserving existing treatments by cutting down on misuse has been complemented by moves towards addressing...

The paper explores the "hidden costs of rewards" in a dynamic principal-agent framework, in which an informed principal selects in each period a reward for an agent. It shows that rewards are often addictive in that once offered, a contingent reward makes the agent expect it whenever a similar...