“…This matters because these behaviors place adolescents at higher risk for numerous negative health outcomes, including unintended pregnancy, sexually transmitted infections (STIs) (CDC, 2009), and of greatest concern, the human immunodeficiency virus (HIV) (Newbern et al, 2013). Unfortunately, existing prevention interventions have relatively modest effects (Bryan, Schmiege, & Broaddus, 2009; Schmiege, Broaddus, Levin, & Bryan, 2009), particularly for substance-using youth (Cooper, 2002; Tolou-Shams, Stewart, Fasciano, & Brown, 2010).…”