A national U.S. survey found that 23% of the adult population engage in heavy episodic binge drinking at least once a month, 8% currently use illicit drugs, and 25% identify as smokers (Substance Abuse and Mental Health Services Administration, 2007). Moreover, 9% ofthe adult population meets the Diagnostic and Statistical Manual of Mental Disorders (4th ed.; American Psychiatric Association, 1994) criteria for substance dependence or abuse. Similar prevalence rates have been observed in Canada, where 26% of the adult population engage in heavy episodic drinking at least once a month, 14% use illicit drugs (Adlaf, Begin, & Sawka, 2005), and 19% identify as smokers (Heart and Stroke Foundation, 2007). Together these reports suggest that substance misuse and disorders are a widespread problem.Cognitive-behavioral therapy (CBT) ranks among the most effective and widely used treatments for alcohol use disorders (e.g., Finney & Monahan, 1996;Oei, Lim, & Young, 1991). There is also growing support for CBT's efficacy for treating illicit substance use disorders (SUD; e.g., cocaine: Carroll et al., 2004; methamphetamine: Rawson, Gonzales, & Brethen, 2002) and as a smoking cessation approach (e.g., Hall, Munoz, & Reus, 1994). Myriad randomized controlled trials have demonstrated overall support for CBT as comparable to alternative credible psychotherapies, such as 12-step programs and motivational enhancement therapy (e.g., Project MATCH Research 211