“…Although some contemporary research (within this century) continues to be informed by the positivist paradigm-for instance, through the use of randomized controlled trials-much of this research does not involve random assignment to a community-based SHSG per se. Instead, it involves random assignment to treatments that ''urged'' attendance (Weiss et al, 2005, p. 178), to interventions that involved intensive referral (Timko & DeBenedetti, 2007;Timko, DeBenedetti, & Billow, 2006), or to a rehabilitation residential setting premised on peer recovery (Jason, Olson, Ferrari, & Lo Sasso, 2006;Jason, Olson, Ferrari, Majer, Alvarez, & Stout, 2006). These examples are somewhat different to the random assignment of individuals to a community-based SHSG that is not situated in a place of residence.…”