Trajectories of Childhood Antisocial Behaviour: A New Model and Prevention Program for the Early Onset Life Course Persistent Offender. Criminal offences committed by children under 14 years in Western Australia and Queensland increased by almost 20% in 2003. Many individuals involved in these actions began their antisociality in primary school and continued through high school, despite intervention. Support for the developmental pathway to early onset persistent offending is found in the school ....Trajectories of Childhood Antisocial Behaviour: A New Model and Prevention Program for the Early Onset Life Course Persistent Offender. Criminal offences committed by children under 14 years in Western Australia and Queensland increased by almost 20% in 2003. Many individuals involved in these actions began their antisociality in primary school and continued through high school, despite intervention. Support for the developmental pathway to early onset persistent offending is found in the school suspension and exclusion data where in 2002, 3339 Western Australian primary school children were suspended. Trends are comparable in Queensland. Antisocial behaviour is a major costly education and public health problem. This research addresses the issue of preventative treatments and hence State and Federal government expenditure. Read moreRead less