“…Affiliation with 12-step fellowships, both during and after treatment, is a cost-effective and useful approach to promoting recovery from alcohol-and other drug-related problems (e.g., Christo & Franey, 1995;Fiorentine & Hillhouse, 2000, Humphreys & Moos, 2001McKay, Merikle, Mulvaney, Weiss, & Kopenhaver, 2001;Miller, Ninonuevo, Klamen, & Hoffmann., 1997;Montgomery, Miller, & Tonigan, 1995;Morgenstern, Labouvie, McCray, Kahler, & Frey, 1997;Project MATCH Research Group, 1997;Timko, Moos, Finney, & Lesar, 2000; for reviews : Tonigan, Toscova, & Miller, 1996;Humphreys, Wing, McCarty, Chappel, Gallant, Haberle et al, 2004). Although the bulk of 12-step studies have focused on substance use as the primary outcome, there is also some evidence that the benefits of 12-step affiliation extend to other areas of psychosocial functioning including less severe distress and psychiatric symptoms, higher likelihood of being employed, and enhanced quality of life (e.g., Gossop, Harris, Best, Man, Manning, Marshall, & Strang, 2003;Moos, Finney, Ouimette, & Suchinsky, 1999).…”