“…In two studies that tested a four-domain model of attention (Mirsky, Anthony, Duncan, Ahearn, & Kellam, 1991), Gulf War and Vietnam Veterans with PTSD performed worse than warzone-exposed Veterans without PTSD on sustained attention and encoding tasks, but not on focus-execute or a shifting task (Vasterling et al, 1998;. These findings are representative of other studies with war Veterans in which PTSD was associated with deficits on encoding (e.g., Gurvits, Lasko, Schacter, Kuhne, Orr, & Pitman, 1993;Uddo, Vasterling, Brailey, & Sutker, 1993;Barrett, Green, Morris, Giles, & Croft, 1996;Vasterling, Brailey, Constans, Borges, & Sutker, 1997;Beckham, Crawford, & Feldman, 1998;Gilbertson et al, 2001), but not set-shifting (Gurvits et al, 1993;Sullivan, Krengel, Proctor, Devine, Heeren, & White, 2003) or focus-execute tasks (Litz et al, 1996).…”