If addicts make a decision to abuse a drug, for example, how does that make addiction a disease? McCauley explains in ordinary terms the neuroscience of addiction and the behaviors of the addicted brain. His presentation illustrates the physiological effects the brain undergoes during addiction and how, as a result, these effects contribute to behavior. If you or someone you know is struggling with addiction, McCauley's scientific angle will help you understand addiction itself and the behaviors behind it.