Tali Boritz, PhD, CPsych, is an assistant professor in the Clinical Psychology Program in the department of psychology at York University and a collaborator scientist in the Borderline Personality Disorder (BPD) Clinic at the Centre for Addiction and Mental Health (CAMH) in Toronto, Canada. She specializes in the treatment of BPD and complex trauma. Her research at York University and CAMH focus on psychotherapy process and outcome and psychotherapy training in BPD treatments. Shelley McMain, PhD, CPsych, is an associate professor in the department of psychiatry at University of Toronto, head of the Borderline Personality Disorder Clinic and a Clinician Scientist at the Centre for Addiction and Mental Health (CAMH), and cofounder of the Centre for MindBody Health in Toronto. She currently serves on the DBT Strategic Planning Committee and on the Scientific Advisory Board of the Linehan Institute. Recognized as a leader in dialectical behavior therapy in Canada and internationally, Dr. McMain conducts research in DBT, personality disorders, emotion regulation, suicide and self-harm, substance abuse, and psychotherapy process and outcomes. Alexandre Vaz, PhD, is cofounder and Chief Academic Officer of Sentio Institute. He provides deliberate practice workshops and clinical training and supervision around the world. Dr. Vaz is the author/coeditor of four books on deliberate practice and psychotherapy training and two book series: The Essentials of Deliberate Practice (APA Books) and Advanced Therapeutics, Clinical and Interpersonal Skills (Elsevier). He has held multiple committee roles for the Society for the Exploration of Psychotherapy Integration (SEPI) and the Society for Psychotherapy Research (SPR). Dr. Vaz is founder and host of "Psychotherapy Expert Talks," an acclaimed interview series with distinguished psychotherapists and researchers. Tony Rousmaniere, PsyD, is cofounder and Program Director of Sentio Institute. He provides workshops, webinars, and clinical training and supervision around the world. He is the author/coeditor of six books on deliberate practice and psychotherapy training and two book series: The Essentials of Deliberate Practice (APA Books) and Advanced Therapeutics, Clinical and Interpersonal Skills (Elsevier). In 2017, he published the widely cited article in The Atlantic Monthly, "What Your Therapist Doesn't Know." Dr. Rousmaniere supports the open-data movement and publishes clinical outcome data at drtonyr.com. He was awar