Laurie A. Greco, PhD, is assistant professor of psychology at the University of Missouri - St. Louis. She is a clinical psychologist and psychotherapist with more than ten years of clinical experience with children, adolescents, and families. Although early in her career, Greco has already published more than twenty articles and book chapters and has given more than sixty conference presentations. In the past five years, she has conducted some forty workshops and professional trainings at the national and international level on topics germane to acceptance and commitment therapy and behavioral parent training
Steven C. Hayes, PhD, is Nevada Foundation Professor in the department of psychology at the University of Nevada, Reno. He has been president of numerous professional organizations, is author of forty-five books and nearly 650 scientific articles, and is among the most cited living psychologists. He has shown in his research how language and thought leads to human suffering, and is originator and codeveloper of acceptance and commitment therapy (ACT): a powerful therapy method that is useful in a wide variety of areas; relational frame theory (RFT): an empirical program in language and cognition; and process-based therapy (with Stefan G. Hofmann).