David Chantry, Clin. Psy. D., earned his doctorate at the University of Manchester. He is a clinical psychologist practising in an adult mental health outpatient clinic and community mental health team in Stoke-on-Trent, UK. A practitioner of ACT since 2003, he has attended various ACT workshops and events led by Steven Hayes, Kelly Wilson, and others since 2002
Bill Klatte, MSW, LCSW, has been a psychotherapist and social worker for more than thirty-two years. He is currently a psychotherapist with Medical Associates Health Centers near Milwaukee, WI, and has counseled thousands of people individually, in families, and in groups. He gives presentations, workshops, and seminars to professionals as well as laypeople on such topics as parenting, anger management, and self-growth.