“…Models commonly used to explain individual variation in risky behavior have included factors such as knowledge, beliefs, attitudes, and behavioral skills as predictors (Bandura, 1994;Fishbein & Middlestadt, 1989;Fisher, Fisher, & Harman, 2003). Environmental and contextual factors are also important (Boodram, Golub, & Ouellet, 2010;Boodram, Hotton, Shekhtman, Gutfraind, & Dahari, 2018;Boodram, Mackesy-Amiti, & Latkin, 2015;German, Davey, & Latkin, 2007;Hotton & Boodram, 2017;Roy et al, 2011), especially in relation to planning public health responses, including harm reduction, increased testing, linkage to care, and availability of curative direct-acting antiviral (DAA) HCV therapy (Boodram et al, 2020;National Academies of Sciences Engineering and Medicine, 2016;Platt et al, 2018). The role of affect and emotion regulation in determining injection risk behavior, on the other hand, has received little attention.…”