Editor Steven C. Hayes, PhD, is Nevada Foundation Professor at the Department of Psychology at the University of Nevada. An author of 34 books and more than 470 scientific articles, he has shown in his research how language and thought leads to human suffering, and has developed acceptance and commitment therapy, a powerful therapy method that is useful in a wide variety of areas. Hayes has been president of several scientific societies and has received several national awards, including the Lifetime Achievement Award from the Association for Behavioural and Cognitive Therapy.

Editor Michael E. Levin, MA, is a doctoral candidate in clinical psychology at the University of Nevada, Reno and a research associate with Contextual Change, LLC. He has been a principal investigator on two federally funded grants, seeking to develop and test web-based acceptance and mindfulness-based interventions for the prevention and treatment of mental health problems. Levin has published over twenty articles and chapters related to addictive behaviours and acceptance and mindfulness-based interventions.