“…This study, combined with our earlier findings (Prendergast et al, 2008; Hall et al, 2009) and those of others (Letourneau, McCart, Asuzu, Mauro, & Sheidow, 2013; Marlowe et al, 2008) involving a variety of criminal justice populations, seem to indicate that CM does not result in sustained abstinence or improved attendance with offenders. In a study evaluating the use of incentives in a prison-based treatment program (Burdon, De Lore, Dang, Warda, & Prendergast, 2013), the results showed little evidence of a consistent and strong impact of incentives on during-treatment measures of psychosocial functioning and treatment participation. The results of that study indicated that the intervention affected female and male participants differently and with some variables in the opposite direction of what was expected.…”