MedicalResearch.com Interview with: Eric Lacourse, Ph.D.  Professeur agrégé Département de sociologie Université de Montréal Groupe de Recherche sur l'Inadaptation Psychosociale chez l'enfant  Centre de Recherche de l'Hôpîtal Ste-Justine MedicalResearch.com: What are the main findings of the study? Dr. Lacourse: The gene-environment analyses revealed that early genetic factors were pervasive in accounting for developmental trends, explaining most of the stability and change in physical aggression, ” Lacourse said. “However, it should be emphasized that these genetic associations do not imply that the early trajectories of physical aggression are set and unchangeable. Genetic factors can always interact with other factors from the environment in the causal chain explaining any behaviour.” (more…)