Luke has a new review article in the Annals of the New York Academy of Science ‘Addiction Reviews’ issue. The basic premise is: if drugs of abuse are so powerful at hijacking the natural reward system, then how can behavioural addictions come to exist? The article focusses mainly on problem gambling, but also considers application to compulsive shopping, obesity and excessive gaming.
Clark L. Disordered gambling: the evolving concept of behavioural addiction. Annals of the New York Academy of Science (Addiction Reviews) 2014, 1327: 46-61.