Development, prevention science and adaptation

Interdisciplinary Lab

The DePSA Lab, established and directed by Dr Natalie Castellanos-Ryan, Dr Sophie Parent and Dr Jean Séguin, is an interdisciplinary lab, located at the Ste-Justine Hospital Research Center and affiliated with both the School of Psychoeducation and the department of Psychiatry and Addictology at the University of Montreal, Montreal, Quebec, Canada.


graduate students since 2010


publications since 2010


project grants held since 2010



Since 2010, the 3D study follows 2366 children since the womb to study children development. Since the beggining of 3D study, many follow-up have been carried out to assess specific aspects of child development. Two of those follow-up are done by the DePSA Lab : 3D-Transition and 3D-Transition-Ado.

QLSCD (In 2001… I was 5 years old)

For 18 years, QLSCD (In 2001… I was 5 years old) participants, their families, and their teachers participated in a variety of assessment modalities to document changes in their living conditions, cognitive development, and psychosocial and academic adjustment.

Our Team

Jean Séguin

Ph.D. Psychology

Sophie Parent

Ph.D. Psychology