2Written by leaders in the addictions field, 100 authors from six countries, this handbook is a thoroughly comprehensive resource. Philosophical and legal issues are addressed, while conceptual underpinnings are provided through explanations of appetitive motivation, incentive sensitization, reward deficiency, and behavioral economics theories. Major clinical and research methods are clearly mapped out (e.g. MRI, behavioral economics, interview assessments, and qualitative approaches), outlining their strengths and weaknesses, giving the reader the tools needed to guide their research and practice aims. The etiology of addiction at various levels of analysis is discussed, including neurobiology, cognition, groups, culture, and environment, which simultaneously lays out the foundations and high-level discourse to serve both novice and expert researchers and clinicians. Importantly, the volume explores the prevention and treatment of such addictions as alcohol, tobacco, novel drugs, food, gambling, sex, work, shopping, the internet, and several seldom-investigated behaviors (e.g. love, tanning, or exercise).