Longitudinal research
indicates that young
children who develop disruptive behaviour problems are at an elevated risk for a host
of negative outcomes including chronic aggression and conduct problems, substance abuse, poor emotion regulation, school failure, peer problems and delinquency.4, 5 Early - appearing externalizing behaviours can disrupt relationships with
parents and peers, initiating processes that can maintain or exacerbate
children's behavioural problems.6 Therefore, very early intervention (e.g., in day care,
preschool, or kindergarten) can be important in interrupting the potential path to chronic aggression in
children who display aggressive behaviour or who are at risk for developing aggressive behaviour.