Linda J. Hayes, PhD, is professor of psychology, and founder and director of the behavior analysis program at the University of Nevada, Reno.
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).
Koichi Ono, PhD, is professor of psychology at Komazawa University in Tokyo, Japan.
Mayasa Sato, PhD, is professor of psychology at Teikyo University in Tokyo, Japan.