“…Some evidence indicates that 12-Step based treatment assists adolescents in reducing substance use (Winters et a!. 2000 ;Kennedy & Minami 1993;Alford , Koehler & Leonard 1991) and that adolescents who participate in 12-Step meetings after inpatient treatment maintain lower levels of substance use and/or higher rates of abstinence than adolescents who do not (Kelly, Myers & Brown 2001, 2000Hsieh, Hoffman & Hollister 1998;Kelly & Myers 1997;Brown 1993;Kennedy & Minami 1993;Alford, Koehler & Leonard 1991;Brown, Mott & Myers 1990). While two such studies identified self-help meeting attendance as one of the most powerful discriminators of abstinence up to six and 12 months after discharge from treatment (Hsieh, Hoffman & Hollister 1998;Kennedy & Minami 1993), conclusions from this research are limited because of the small number of studies, a focus on adolescents discharged from residential or inpatient treat ment only, nonexperimental designs, and measurement of 12-Step meeting involvement solely in terms of attendance rather than other dimensions of involvement (such as obtain ing a sponsor, reading literature , and working the steps).…”