This textbook provides an introduction to the action that various drugs have on the brain and behavior. Because most students find this topic interesting, it creates an opportunity for learning about basic physiology that can otherwise be perceived as tedious. In addition to exploring the physiology of the effects of drugs, the book also covers the social consequences and health implications, making it ideal for use in health psychology and health promotion also. Chapters include common substances such as tobacco and alcohol, hard drugs such as amphetamines, Ecstasy, and cocaine, with a final section considering drugs used in the treatment of major psychiatric disorders. Written by experienced lecturers, Understanding Drugs and Behaviour simplifies teaching by including chapter overviews, questions that the student should be able to answer at the end of each chapter, and a clear structure throughout.