“…For during-treatment information, these CEST scales can be expanded to include indicators of therapeutic engagement (Joe, Broome, Rowan-Szal, & Simpson, 2002). While original development and testing of the CEST scales were carried out in community-based treatment settings, they subsequently have been modified for a wide range of applications for CJ-involved drug users (e.g., Garner, Knight, Flynn, Morey, & Simpson, 2007; Joe, Rowan-Szal, Greener, Simpson, & Vance, 2010), including international settings (Simpson et al, 2009). …”