the assessment and treatment of perfectionistic behavior. He, along with Dr. Samuel Mikail, developed Dynamic Relational Psychotherapy that has been evaluated and refined empirically for treatment of perfectionism and associated psychopathology. He regularly talks and conducts workshops on perfectionism and treatment internationally and the American Psychological Association has produced several published videos of Dr. Hewitt demonstrating the treatment. Dr. Hewitt’s Perfectionism and Psychopathology Laboratory at the University of British Columbia is currently focusing on several large scale studies assessing and refining the assessment and treatment of perfectionism and addressing the development of perfectionism in children and adolescents. In addition, he is involved in many collaborative projects throughout Europe and the U.S.A dealing with various clinical issues pertaining to perfectionism and its pernicious outcomes. Select Publications Books Tasca, G., Mikail, S.F., & Hewitt, P. L. (2020). Group psychodynamic interpersonal psychotherapy. Washington, DC: American Psychological Association. Linden, W., & Hewitt, P. L. (2018). Clinical psychology: a modern health profession. New York, NY: Routledge. Hewitt, P. L., Flett, G. L., & Mikail, S. F. (2017). Perfectionism: A Relational Approach to Conceptualization, Assessment and Treatment. New York: Guilford Press. Flett, G. L., & Hewitt, P. L. (2002). Perfectionism: theory, research, and treatment. Washington, DC: American Psychological Association. Research Hewitt, P. L., Chen, C., Smith, M. M., Zhang, L., Habke, M., Flett, G. L., & Mikail, S. F. (in press). Patient perfectionism and clinician impression formation during an initial Interview. Psychology and Psychotherapy: Theory, research and practice. Hewitt, P. L., Smith, M. M., Deng, X., Chen, C., Ko, A., Flett, G. L., & Paterson, R. J. (in press). The perniciousness of perfectionism in group therapy for depression: A test of the perfectionism social disconnection model. Psychotherapy. Hewitt, P. L. (2020). Perfecting, belonging, and repairing: A dynamic-relational approach to perfectionism. Canadian Psychology. Hewitt, P. L., Chen, C., Smith, M. M., Zhang, L., Habke, M., Flett, G. L., & Mikail, S. F. (2020). Patient perfectionism and clinician impression formation during an initial interview. Psychology and Psychotherapy: Theory, research and practice. Hewitt, P. L., Qiu, T., Flynn, C. A., Flett, G. L., Wiebe, S. A., Tasca, G. A., & Mikail, S. F. (2020). Dynamic-Relational Group Treatment for Perfectionism: Informant Ratings of Patient Change. Psychotherapy. Hewitt, P. L., Smith, M. M., Deng, X., Chen, C., Ko, A., Flett, G. L., & Paterson, R. J. (2020). The perniciousness of perfectionism in group therapy for depression: A test of the perfectionism