Mark Griffiths is Director of the International Gaming Research Unit at Nottingham Trent University and one of the foremost experts on the psychology of addictive behaviors, particularly gambling and excessive internet use. A Fellow of the British Psychological Society and the Royal Society of Arts, he is the recipient of numerous prestigious career and research awards, including a lifetime achievement award from the US Institute for the Study of Gambling and Commercial Gaming for his pioneering contributions to the field of youth gambling . He has chaired or served on over 20 national and international committees in his chosen fields, and has advised numerous governments (in Europe, North America and Australia) on gambling issues. This volume in the World Library of Psychologists series presents a carefully selected set of highlights from Professor Griffiths' 500+ articles to provide a summary of his thought and an important guide to the psychology of behavioral and technological addiction. Following a new introduction from the author, its opening part considers addiction in a general sense, with subsequent sections devoted to gambling addiction (online and offline), gaming and internet addiction. Taken as a whole, they provide a unique snapshot of the field that will indispensable to scholars, researchers and students of the psychology of addictive behavior.