“…BIs following screening procedures are promising approaches for addressing substance use and associated risks that aim to increase motivation to change behaviour for adolescents who do not meet diagnostic criteria for a substance use disorder (Carney, Myers, Louw, & Okwundu, 2016) but more evidence is needed with this population (Bazzi & Saitz, 2018) to ensure the efficacy of such interventions. Previous studies have found that incorporating a caregiver (e.g., parent) component within BIs have led to significantly better substance use and other behavioural outcomes for adolescents compared to BIs that focus on the adolescent only (Piehler & Winters, 2015;Winters, Lee, Botzet, Fahnhorst, & Nicholson, 2014). This is not surprising given evidence that parenting style is a significant predictor of adolescent substance use (Brook, Morojele, Pahl, & Brook, 2006;Reddy et al, 2013) and findings that parents can protect adolescents against substance use if they control, monitor and set limits on their children's behaviour (Groenewald & Bhana, 2016).…”