“…CM has been applied and evaluated in relation to all the major substance addictions – cocaine, methamphetamine, opioids, alcohol, marijuana, and nicotine (see Petry, Alessi, & Rash, 2011 , p. 233) and is also being applied to problem gambling ( Petry, 2010a ). At least three independent meta-analyses have found CM to be efficacious in bringing about drug abstinence ( Benishek et al, 2014 , Lussier et al, 2006 , Prendergast et al, 2006 ) and CM was one of only two psychosocial treatments recommended by the National Institute for Health and Care Excellence (NICE) (2007) in the UK for the treatment of problems related to illicit drug use.…”