“…These included aggressionguilt (Knott, Lasater, & Shuman, 1974), authoritarianism (Altemeyer, 1981), dominance (Leyens, Herman, & Dunand, 1982), introversion (Garcia, 1985), locus of control (Dengerink, O'Leary, & Kasner, 1975), Machiavellianism (Murphy, 1974), and personal norm of reciprocity (Perugini & Gallucci, 2001). 6 Studies for which effect sizes could not be calculated included Bjork et al (2000); Pihl, Zacchia, and Zeichner (1982);and Stephens, Nelson, and Hudgens (1974). 7 The identified studies that measured the personality variable after the aggression measure was taken included Cherek, Schnapp, Moeller, and Dougherty (1996); Dougherty, Bjork, Huckabee, Moeller, and Swann (1999); Lieberman, Solomon, Greenberg, and McGregor (1999); South, Oltmanns, and Turkheimer (2003);and Verona, Patrick and Lang (2002).…”