Dennis Tirch, PhD, is Founder of the Center for Compassion Focused Therapy in New York City and Associate Clinical Professor in the Icahn School of Medicine at Mt. Sinai Medical Center. He is author or coauthor of numerous books, chapters, and peer-reviewed articles on acceptance and commitment therapy, compassion-focused therapy, cognitive-behavioral therapy, and Buddhist psychology. His books include Buddhist Psychology and Cognitive-Behavioral Therapy and Experiencing ACT from the Inside Out. Dr. Tirch is President of the Association for Contextual Behavioral Science (ACBS) and the Compassionate Mind Foundation USA. He provides online and in-person workshops and trainings globally in mindfulness-, compassion-, and acceptance-based interventions. Dr. Tirch is a Fellow of ACBS and a Fellow and Trainer/Consultant of the Academy of Cognitive and Behavioral Therapies. He is a member of the Zen Garland sangha and a lay teacher of Buddhism.

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Laura R. Silberstein-Tirch, PsyD, is Director of the Center for Compassion Focused Therapy and Adjunct Assistant Professor at Albert Einstein College of Medicine of Yeshiva University. Dr. Silberstein-Tirch is a clinical supervisor and compassion-focused therapy (CFT) trainer who presents internationally on mindfulness and compassion. She is coauthor of books including Buddhist Psychology and Cognitive-Behavioral Therapy and Experiencing ACT from the Inside Out. Dr. Silberstein-Tirch is President of the New York City chapter of the Association for Contextual Behavioral Science and Executive Director of The Compassionate Mind Foundation USA. Her research interests include psychological flexibility and emotions as well as CFT for anxiety and depression.

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R. Trent Codd, III, EdS, BCBA, is Executive Director of the Cognitive-Behavioral Therapy Center of Western North Carolina in Asheville, where he treats a broad range of clinical concerns. He has particular interest in refractory depression and obsessive–compulsive spectrum disorders. Mr. Codd is a charter member of the Association for Contextual Behavioral Science and a Fellow and Trainer/Consultant of the Academy of Cognitive and Behavioral Therapies. He is coauthor of Teaching and Supervising Cognitive Behavioral Therapy and editor of Practice-Based Research: A Guide for Clinicians.

Martin J. Brock, MSc, MA, RMN, is Senior Lecturer in the Department of Counselling and Psychotherapy and Program Leader for the Postgraduate Certificate in Compassion Focused Therapy at the University of Derby, United Kingdom. Mr. Brock has had a long career in the National Health Service in the United Kingdom, practicing and supervising evidence-based psychotherapies. He has advanced training and experience in cognitive-behavioral therapy (CBT), mindfulness-based CBT, compassion-focused therapy, and acceptance and commitment therapy (ACT). Mr. Brock has served as president of the United Kingdom and Ireland chapter of the Association for Contextual Behavioral Science; was a founding member of the British Association for Behavioural and Cognitive Psychotherapies ACT special interest group; and was the first peer-reviewed ACT trainer in the United Kingdom. As an ACT trainer and supervisor, Mr. Brock has regularly delivered workshops globally since 2006.

M. Joann Wright, PhD, is a clinical psychologist with the Linden Oaks Medical Group in Naperville, Illinois. Dr. Wright is a peer-reviewed trainer in acceptance and commitment therapy (ACT) and a Fellow of the Association for Contextual Behavioral Science. Dr. Wright has provided ACT training to doctoral students and therapists nationally and internationally since 2008. She is dedicated to teaching and delivering ACT to help people reduce suffering in their lives. Dr. Wright is coauthor of Learning ACT for Group Treatment: An Acceptance and Commitment Therapy Skills Training Manual for Therapists.