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Externalizing (e.g. conduct problems and antisocial behaviors) and internalizing (e.g. depression and anxiety) problems have been associated with gambling-related harms. However, there is a paucity of longitudinal research investigating how these problems and their patterns of change over time (i.e. trajectories) predict gambling engagement among youth. This study aimed to examine the trajectories of externalizing and internalizing problems and their predictive values for later gambling. Data came from a cohort of 744 children (53.2% male, Mage 8.3 years at baseline) from Québec, Canada, with 58.3% reporting significant externalizing behaviors at baseline. Participants were followed for 7 years. Externalizing and internalizing problems were measured annually, and past year gambling was assessed at the final measurement. Mean trajectories of externalizing and internalizing problems were identified through parallel process growth modeling, and logistic regression was utilized to examine whether these trajectories were predictive of gambling engagement. Thirty-one of the 659 participants remaining at the final measurement reported participation in gambling. Greater baseline externalizing problems, lower baseline internalizing problems, and a less significant decrease in externalizing problems over time predicted gambling engagement. These results provide evidence of the externalizing pathway toward youth gambling and the importance of early intervention involving youth and other relevant stakeholders. [ABSTRACT FROM AUTHOR]

The high levels of comorbidity between oppositional/conduct problems and hyperactivity/attention problems underscore the need for assessing how vulnerability for peer victimization is shaped by overlap among these behavior problems. Children (mean age 8.39, SD = 0.93) participating in a longitudinal study of the development of conduct problems (N = 744; 348 girls) in Quebec, Canada, were evaluated by their teachers regarding experiences of peer verbal and physical victimization every year for 6 years. Parent and teacher ratings of clinically significant oppositional/conduct problems, and hyperactivity/attention problems, as well as cormorbid opposition defiant/conduct problems and hyperactivity/attention problems were regressed onto trajectories of verbal and physical victimization. While behavior problems (both alone and together) were associated with higher levels of verbal and physical victimization, some variation was observed across rater and type of victimization. Ultimately, these findings suggest the importance of adapting programming for reducing victimization to children with oppositional and conduct problems. [ABSTRACT FROM AUTHOR]