Robyn D. Walser, PhD, is director of TL Consultation and Psychological Services, and codirector of Bay Area Trauma Recovery Clinical Services. She works at the National Center for PTSD, developing and disseminating innovative ways to translate science into practice; and serves as assistant clinical professor in the department of psychology at the University of California, Berkeley. As a licensed clinical psychologist, she maintains an international training, consulting, and therapy practice. Walser has authored and coauthored six books: The Heart of ACT, Learning ACT, The Mindful Couple, Acceptance and Commitment Therapy for the Treatment of Post-Traumatic Stress Disorder and Trauma-Related Problems, and ACT for Clergy and Pastoral Counselors.
Darrah Westrup, PhD, is a licensed clinical psychologist practicing in Colorado and California with an established reputation for her work as a therapist, program director, trainer, researcher, and consultant to practitioners at various firms and organizations. She is a recognized authority on post-traumatic stress disorder (PTSD) and acceptance and commitment therapy (ACT), and has conducted numerous presentations and trainings at international, national, and local conferences, seminars, and workshops. She served for over five years as an expert ACT consultant for the VA-wide evidence-based treatment rollout of ACT for depression, and is author of Advanced Acceptance and Commitment Therapy. Westrup has also coauthored two additional books on ACT: Acceptance and Commitment Therapy for the Treatment of Post-Traumatic Stress Disorder and Trauma-Related Problems and The Mindful Couple.
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).
