CHRIS CHANDLER is Professor of Psychology at London Metropolitan University, where he teaches psychobiology and addiction at both undergraduate and postgraduate levels. An expert in the neuropsychology of ADHD and addiction, Chandler's research explores the role of dopamine in behavior and the psychobiological aspects of addiction. He is also the author of Psychobiology and Addiction: A Biopsychosocial Perspective (co-authored with Anita Andrews) and numerous peer-reviewed articles.