Shahan, Timothy - Conditioned Reinforcement - The notion that stimuli associated with primary reinforcers may themselves come to function as reinforcers has served a central role in the analysis of behavior and its applications outside the laboratory. However, a long history of research has raised the possibility that stimuli associated with primary reinforces may have their effects by some other means. This tutorial will provide an overview of the concept of conditioned reinforcement, review the role of conditioned reinforcement in quantitative theories of choice, and discuss remaining questions about how putative conditioned reinforcers have their effects.