“…CM procedures have been effectively applied to reduce the use of a number of substances (Hartzler et al 2012, Stitzer et al 2007), including cigarettes (Alessi et al 2004, Yi et al 2008), alcohol (Alessi & Petry 2013, Koffarnus et al 2011, Petry et al 2000), cocaine (Higgins et al 1993, Petry et al 2013), marijuana (Carroll et al 2012), and opiates (Bickel & Marsch 1999, Bickel et al 1999a, DeFulio & Silverman 2011, Silverman et al 1996). CM treatment is also associated with increases in quality of life in substance abusers (Petry et al 2007), and cost-effectiveness studies suggest that these interventions result in a net economic gain owing to their relative efficacy and the expense associated with treatment failures in substance-abusing populations (e.g., inpatient treatment, incarceration, increased health care utilization) (Olmstead et al 2012, Sindelar et al 2007).…”