“…Additionally, drinking and drug use typically occur in a social context among young adults and can effectively facilitate social and sexual relationships during a period when establishing these relationships is developmentally critical (Kirchner et al, 2006; Meisel, Clifton, Mackillop & Goodies, 2015). Indeed, most young adults report that the positive (largely social) effects of heavy drinking outweigh the negative effects (Park, 2004), perhaps in part because heavy substance use is generally not stigmatized within this population (Tucker et al, 2015), and because young adults typically have less structured time and fewer responsibilities (e.g., children, demanding career), allowing them to use alcohol and drugs with lower opportunity cost (Bachman, Wadsworth, O’Malley, Johnston, & Schulenberg, 2013; Wechsler & Nelson, 2008). Thus, although many young adults are at risk for immediate and delayed consequences related to substance use, they tend to devalue these risks (Field et al, 2007), relative to the highly salient rewards associated with drug use, and consequently express little motivation to participate in treatment or to change their substance use (Buscemi et al, 2010).…”