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This study contributed to the criminal trajectory literature using a Canadian-based sample of offenders and examined childhood and adolescent predictors of trajectory group membership. The sample comprised 378 males who had been sentenced as youth, between 1986 and 1996, to one of two open custody facilities in Toronto, Canada. Official criminal records were obtained from late childhood and early adolescence into adulthood for an average follow-up of 12.1 years. Childhood and adolescent predictors reflecting individual, family, peer, and school domains were extracted from client files. Trajectory analysis yielded four groups, labeled moderate rate (MR); low rate (LR); high-rate, adult peaked (HRADL); and high-rate, adolescence peaked (HRADOL). Multinomial regression analyses indicated that risk factors representing the family and peer domains differentiated the MR, HRADL, and HRADOL groups from the LR group. Moreover, whereas both child and adolescent risk factors were associated with the MR, HRADL, and HRADOL groups, only adolescent risk factors were associated with the LR group.

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This article examines the criminal trajectories together with the childhood predictors and adolescent correlates of trajectory-group membership in a sample of 386 adjudicated youth in Ontario. Study participants had served a sentence at one of two open custody facilities in Toronto between 1986 and 1997. Criminal offending, based on official records, was tracked for 16.4 years, on average (SD=4.1, range=9.8–28.7 years), from late childhood/early adolescence into the early 30s, on average. Childhood and adolescent factors reflecting individual, family, peer, and school domains were extracted from client files. A seven-group model best fit the sample. Results of the multinomial regression analyses indicated that antisocial behaviour and poor academic achievement in childhood and poor family relations, involvement in alternative care, and poor academic achievement in adolescence differentiated the low-rate desister trajectory from the high- and moderate-rate offence trajectories. Implications for identifying children and youth at risk for high-rate persistent offending so as to target them in prevention and early intervention programs are discussed.