childhood aggression study

Study examines chronic aggression among children
Chronic aggressive behavior can't be unlearned, according to a new study of 35,000 Canadian children spanning more than 20 years. "It's surprising that the idea that children and adolescents learn aggression from the media is still relevant," said study leader Richard Tremblay, a University of Montreal professor of pediatrics, psychiatry and psychology. "Clearly youth were violent before television appeared."
Tremblay, R. (2007). he joint development of physical and indirect aggression: Predictors of continuity and change during childhood. Development and Psychopathology, 19 (1), 37-55.