“…Despite institutional prohibitions, drug use often continues in prison (Alibu-Garcia, Hernández-Viver, Feal, & Rodríguez-Orengo, 2009; Clarke, Stein, Hanna, Sobota, & Rich, 2001; Plourde & Brochu, 2002; Rowell, Wu, Hart, Haile, & El-Bassel, 2012; Small et al, 2005). Drug use in prison is seen as a coping mechanism that helps prisoners deal with their imprisonment (Cope, 2003; Hughes & Huby, 2000), and some drug use is initiated in prison (Boys et al, 2002). The concentration of drug-using individuals may promote drug use in custody by providing opportunities for increased interaction between high-risk individuals.…”