“…The standards of practice in the mental health disciplines therefore mandate a vigilant stance with regard to the risk of harm to self and the risk of harm to others. This has resulted in the development of distinct guidelines for the assessment of risk of harm to self and guidelines for the assessment of risk of harm to others (Joiner, Walker, Rudd, & Jobes, 1999; Kleespies, Deleppo, Gallagher, & Niles, 1999; Otto, 2000; Thienhaus & Piasecki, 1998; Tishler, Gordon, & Landry-Meyer, 2000; VandeCreek & Knapp, 1999). Yet these two forms of aggression frequently coexist not only in the case of homicide–suicide but also in the much more frequently occurring instances of nonlethal aggression.…”