“…With regard to the PK scale, findings are also somewhat ambiguous. Although many reports suggest adequate discrimination between groups using a cutoff score on the PK scale (Cannon, Bell, Andrews, & Finkelstein, 1987;Query, Megran, & McDonald, 1986; C. G. Watson et al, 1986), some studies suggest that the scale is best described as a measure of general distress not specific to PTSD (Gayton et al, 1986;Hyer, Boudewyns, O'Leary, & Harrison, 1987;Miller, Goldberg, & Streiner, 1995;Scheibe, Bagby, Miller, & Dorian, 2001).…”