Dr. Delroy L. Paulhus

Dr. Delroy L. Paulhus

Professor Emeritus of Psychology
University of British Columbia

Creator of the Short Dark Triad (SD3) — the world's most widely used measure of narcissism, Machiavellianism, and psychopathy in everyday populations.

About Dr. Delroy L. Paulhus

Dr. Delroy L. Paulhus is a Professor Emeritus of Psychology at the University of British Columbia whose career spans more than four decades of influential work in personality psychology. He is best known as the co-creator of the Short Dark Triad (SD3), which has become the most widely administered measure of subclinical narcissism, Machiavellianism, and psychopathy in normal (non-clinical) populations — fueling a massive global literature on the dark side of personality across psychology, management, criminology, and beyond.

He also developed the Balanced Inventory of Desirable Responding (BIDR), a foundational measure of self-enhancement and socially desirable responding. Over his career Dr. Paulhus has published more than 150 articles and book chapters, accumulating more than 58,000 Google Scholar citations. He has been a rigorous critic of inflated personality measures and a tireless advocate for precision in psychological assessment. His influence on how the field conceptualizes and measures both the dark and the self-deceptive dimensions of human personality is difficult to overstate.

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