R. Michael Bagby is a Full Professor in the Departments of Psychology and Psychiatry and Chair of the Graduate Department of Psychological Clinical Science at the University of Toronto. He recently received an award from the American Psychological Association for lifetime contributions to assessment psychology; he has published widely in the areas of personality, psychopathology and psychological assessment.

Graeme Taylor is a Professor Emeritus in the Department of Psychiatry at the University of Toronto, and a Distinguished Life Fellow of the American Psychiatric Association. He has conducted research on the alexithymia construct since 1980 and has published widely in this field.