“…Although expressive suppression may differ from direct suppression of emotional experiencing or thoughts, physiological responding to stress may be intensified or prolonged by expressive suppression (e.g., Gross, 1998b), and exposure to traumatic events, particularly interpersonal trauma, is thought to reduce emotion regulation capacity, leading to difficulties in emotion regulation not entirely captured by the diagnosis of posttraumatic stress disorder (PTSD; Frewen & Lanius, 2006;Pelcovitz, van der Kolk, Roth, Mandel, Kaplan, & Resick, 1997;van der Kolk, Roth, Pelcovitz, Sunday, & Spinazzola, 2005). Furthermore, in stress-related reactions such as PTSD, it has been suggested that suppression of thoughts or emotions may potentially contribute to the maintenance of posttraumatic reactions, leading to chronic PTSD (e.g., Foa & Riggs, 1993;Purdon, 1999;Roemer, Litz, Orsillo, & Wagner, 2001;Shipherd & Beck, 1999). Indeed, initial work in this area by Roemer and colleagues (2001) suggests that individuals with PTSD report suppressing emotions more frequently and more intensely than those without PTSD.…”