This book addresses what makes us human and unique by asking the question, how does the brain process reward and make decisions when faced with multiple options? Reward and Decision making spans a very wide range of topics--from molecular mechanisms, neural system dynamics to computational models. This book provides a framework for understanding the neuroscience of reward and decision making processes. It focuses on five key areas: animal studies; functional MRI studies; clinical implications of process dysfunction; genetic and hormonal influences; computational models.