The production of this book represents a culmination for me of some 25 years of interest in the field of personality and substance use and abuse. In choosing the field of substanceuse and abuse for the focus of our research, all of the investi- tors collaborating in this research have been sustained by the awareness that the work we are doing has an important purpose. Substance abuse continues to have enormous impacts on individuals and families, and prevention and treatment - proaches developed to date have not always been as successful as we would hope to see. New advances in our...