Dr. Paul L. Hewitt is a Full Professor in the Department of Psychology, an Associate Member of the Psychotherapy Program in the Faculty of Medicine at the University of British Columbia, and a Registered Psychologist in British Columbia, Canada. He is a Fellow of the Canadian Psychological Association and of its Section on Clinical Psychology. He has won numerous awards. In 2017, Hewitt was named one of the top 10 Canadian clinical psychology professors for research productivity and, in 2019, he was awarded the Canadian Psychological Association’s Donald O. Hebb Award for Distinguished Contributions to Psychology as a Science. Dr. Hewitt is a researcher and clinician and has had a private practice since 1988 which focuses on psychodynamic/interpersonal assessment and psychotherapy for individuals experiencing difficulties from perfectionistic behavior, early trauma, depression, anxiety, personality, and interpersonal problems. Background Dr. Hewitt completed a B.A. Honours in Psychology at the University of Manitoba, and completed his M.A. and Ph.D. in Clinical Psychology in 1984 and 1988, respectively, at the University of Saskatchewan, Saskatoon, Canada. He completed his clinical residency in the Department of Psychiatry & Behavioural Sciences in the Faculty of Medicine at the University of Washington, Seattle, U.S.A. He worked as a staff psychologist at the Brockville Psychiatric Hospital and the Faculty of Medicine, University of Ottawa between 1988 - 1991 and as an Assistant and Associate professor at the University of Winnipeg from 1991-1994. He joined the Department of Psychology at the University of British Columbia in 1994 where he is currently a Full Professor, a Director of Clinical Training, and an Associate Member in the Faculty of Medicine. Research and Training Dr. Hewitt is most well-known for his work on perfectionism with Dr. Gordon Flett and Dr. Samuel Mikail and has developed not only several models of perfectionism but also the treatment of perfectionism. Moreover, Dr. Hewitt, Dr. Flett, and Dr. Mikail have developed numerous clinical measures of perfectionism of the components of the perfectionism construct, including the Multidimensional Perfectionism Scale (MPS), the Perfectionistic Self Presentation Scale (PSPS), the Perfectionism Cognitions Inventory (PCI), and similar scales for use with children. These measures have been used widely in both research and clinical settings. Dr. Hewitt, his colleagues, and graduate students have conducted extensive research on the construct of perfectionism as a multidimensional and multilayered personality style, the negative outcomes of perfectionism in psychological, physical health, relationship, and achievement domains, and both