Addressing aggressive behavior in adolescence is a key step toward preventing violence and associated social and economic costs in adulthood. This study examined the secondary effects of the personality-targeted substance use preventive program Preventure on aggressive behavior from ages 13 to 20.

In total, 339 young people from nine independent schools (M age = 13.03 years, s.d. = 0.47, range = 12–15) who rated highly on one of the four personality traits associated with increased substance use and other emotional/behavioral symptoms (i.e. impulsivity, anxiety sensitivity, sensation seeking, and negative thinking) were included in the analyses (n = 145 in Preventure, n = 194 in control). Self-report assessments were administered at baseline and follow-up (6 months, 1, 2, 3, 5.5, and 7 years). Overall aggression and subtypes of aggressive behaviors (proactive, reactive) were examined using multilevel mixed-effects analysis accounting for school-level clustering.

Across the 7-year follow-up period, the average yearly reduction in the frequency of aggressive behaviors (b = −0.42; 95% confidence interval [CI] −0.64 to −0.20; p < 0.001), reactive aggression (b = −0.22; 95% CI 0.35 to −0.10; p = 0.001), and proactive aggression (b = −0.14; 95% CI −0.23 to −0.05; p = 0.002) was greater for the Preventure group compared to the control group.

The study suggests a brief personality-targeted intervention may have long-term impacts on aggression among young people; however, this interpretation is limited by imbalance of sex ratios between study groups.

School refusal is a heterogenous problem which typically emerges in adolescence and co-occurs with internalising disorders. A substantial proportion of adolescents do not respond to existing treatment modalities; thus, novel, effective intervention options are needed. Partners in Parenting Plus (PiP+) is a coach-assisted, web-based intervention designed to empower parents to respond to adolescent internalising disorders.

To conduct a process evaluation of PiP+ and identify programme adaptations required to meet the needs of parents of adolescents who refuse school.

Semi-structured interviews were conducted with 14 Australian mothers who had: (a) received the PiP+ programme (not tailored for school refusal) during a prior research trial; and (b) reported that their adolescent was refusing school during their participation in PiP+. Inductive thematic analysis was used to analyse interview transcripts.

Participants were 41–53 years old (M = 47.8) and parenting adolescent children aged 14–17 years (M = 14.9). Three themes illustrated how PiP+ features met or could better meet the needs of parents of adolescents who were refusing school: (a) feeling heard, supported and respected; (b) relevance to me and my context; and (c) seeing positive changes. Participants had favourable views of PiP+, especially coached components. Participants requested programme enhancements to better meet the needs of parents of neurodiverse adolescents and discussed the impact of cumulative help-seeking ‘failures’ on self-efficacy and locus of control.

PiP+ was highly acceptable to the majority of parents navigating the issue of school refusal. This has implications for the enhancement of coach-assisted parenting interventions and the context-specific adaptation of PiP+ for school refusal.