“…Twenty studies used nonclinical samples recruited via university advertising or online, 14 of which specified trauma exposure as a requirement for participation. The 15 remaining studies reported on clinical samples; war veterans ( n = 8; Bergen‐Cico et al, ; Dahm et al, ; Held & Owens, ; Hiraoka et al, ; Kearney, McManus, Martinez, Felleman, & Simpson, ; Lang et al, ; Meyer et al, , ), adults with PTSD recruited from PTSD or trauma‐specific outpatient settings ( n = 3; Hoffart et al, ; Karatzias et al, ; Müller‐Engelmann et al, ), adults with PTSD recruited from outpatient settings ( n = 2; Beaumont, Galpin, & Jenkins, ; Scoglio et al, ), firemen with PTSD ( n = 1; Beaumont, Durkin, McAndrew, & Martin, ), and individuals in substance abuse treatment ( n = 1; Held, Owens, Thomas, White, & Anderson, ). Twenty‐four included studies employed a cross‐sectional design, and 11 studies were experimental.…”