Robyn D. Walser (Author)
Robyn D. Walser, PhD, is associate director of the National Center for PTSD Dissemination and Training Division, and associate 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 is developing innovative ways to translate science into practice, and is responsible for the dissemination of state-of-the-art knowledge and treatment interventions. Walser has coauthored three books, including Learning ACT, The Mindful Couple, and Acceptance and Commitment Therapy for the Treatment of Post-Traumatic Stress Disorder and Trauma-Related Problems.

Darrah Westrup (Author)
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 currently serves as an expert ACT consultant for the VA-wide evidence-based treatment rollout of ACT for depression, and has coauthored two 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 (Author)
Steven C. Hayes, PhD, is Nevada Foundation Professor and director of clinical training in the department of psychology at the University of Nevada. An author of forty-one books and nearly 600 scientific articles, his career has focused on analysis of the nature of human language and cognition, and its application to the understanding and alleviation of human suffering and promotion of human prosperity. Among other associations, Hayes has been president of the Association for Behavioral and Cognitive Therapies, and the Association for Contextual Behavioral Science. His work has received several awards, including the Impact of Science on Application Award from the Society for the Advancement of Behavior Analysis, and the Lifetime Achievement Award from the Association for Behavioral and Cognitive Therapies.