“…The CES (Keane et al, 1989) consists of 7 items that assesses frequency, duration, and amount of exposure to combat. Veterans with a total CES score <8 were classified as non-combat, while those scoring ≥8 were classified as having a history of exposure to combat, as done in previous studies (Ginsberg, Ayers, Burriss, & Powell, 2008; Myers et al, 2013; Myers, VanMeenen, McAuley, et al, 2012). The 16-item AMBI and 18-item RMBI (Gladstone & Parker, 2005) assess current (adult) and retrospective (childhood) behavioural inhibition (BI), defined as a tendency to withdraw from or avoid novel social and non-social situations; AMBI scores have been shown to correlate with measures of anxiety proneness (Gladstone & Parker, 2005; Gladstone, Parker, Mitchell, Wilhelm, & Malhi, 2005) and with self-reported PTSD symptoms (Myers, VanMeenen, McAuley, et al, 2012; Myers, VanMeenen, & Servatius, 2012).…”