“…Adolescents with these problems are considered more difficult to engage and retain in treatment (Dobkin, Chabot, Maliantovich, & Craig, 1998; Kaminer, Tarter, Bukstein, & Kabene, 1992; Kazdin, 1996). Based on a review of several studies, it appears that adolescents with externalizing disorders were more likely to terminate from treatment early, whereas those with internalizing disorders had better retention rates (Flanzer, 2005); however, Rowe, Liddle, Greenbaum, and Henderson (2004) found comparable treatment engagement and retention for adolescents classified in three comorbid groups. Substance use outcomes also tend to be poorer for those with dual disorders (Couwenbergh et al, 2006).…”