Richard E. Tremblay, Ph.D.


Université de Montréal


Mailing Address

GRIP/Université de Montréal
3050, Édouard-Montpetit Blvd.
Montréal, (QC)
H3T 1J7

Tel: (514) 343-6963
Fax: (514) 343-6962

Appointments, cross appointments, fellowships

  • Richard E. Tremblay is Canada Research Chair in Child Development, professor of Pediatrics/Psychiatry/Psychology, and director of the Research Unit on Children's Psychosocial Maladjustment at the University of Montreal. Since the early 1980s he has been conducting a program of longitudinal and experimental studies, focusing on the physical, cognitive, emotional, and social development of children from conception onward, in order to gain a better understanding of the development and the prevention of antisocial and violent behavior. Director of the Centre of Excellence for Early Child Development, he is a Fellow of the Royal Society of Canada, and the Molson Fellow of the Canadian Institute for Advanced Research.
  • Member of the US National Consortium on Violence Research, he is a former member of the US OJJDP Study Group on Very Young Offenders, and of the US National Research Council Panel on Juvenile Crime Prevention, Treatment, and Control.
  • Professor Tremblay has published more than 230 scientific articles, and 80 book chapters. With the Montreal Longitudinal-Experimental Study he and his colleagues have shown that intensive interventions at school entry can change the long-term behavior trajectories of aggressive kindergarten boys. His recent work, showing that most children initiate physical aggression during infancy, has led him to experiment prevention programs for pregnant women at risk of failing to provide the environment needed for a child to learn alternatives to physical aggression.

Research Interests

Development and prevention of physical aggression and delinquency.


  1. Côté, S., Vaillancourt, T., Barker, E.D., Nagin, D.S., & Tremblay, R.E. (2007) Predictors of continuity and change in the joint development of physical and indirect aggression. Development and Psychopathology, 19 (1), 37-55.
  2. Romano, E., Tremblay, R.E., Farhat, A. & Côté, S. (2006) Development and prediction of hyperactive symptoms from 2 to 7 years in a population-based sample. Pediatrics, 117(6), 2101-2110.
  3. Tremblay, R.E. (2006). Prevention of youth violence: Why not start at the beginning? Journal of Abnornal Child Psychology, 34, (4), 481-487.
  4. Barker, E.D., Tremblay, R.E., Nagin, D., Vitaro, F. & Lacourse, E. (2006). Development of male proactive and reactive physical aggression during adolescence. Journal of Child Psychology and Psychiatry, 47(8), 783-790.
  5. Tremblay, R. E., & Nagin, D. S. (2005). The developmental origins of physical aggression in humans. In R. E. Tremblay, W. W. Hartup, & J. Archer (Eds.), Developmental origins of aggression. New York: Guilford Press.



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