“…Structural factors like overcrowding, narrow hallways/doors, loud noise, poor ventilation, lack of or poorly trained security staff, and lack of proper seating have been linked to disproportionately high rates of aggressive behavior (Forsyth & Lennox, 2010; Graham, Bernards, Osgood, & Wells, 2012; Graham et al, 2004; Hobbs, O’Brien, & Westmarland, 2007; Roberts, 2007; Schnitzer et al, 2010). Social factors such as a permissive atmosphere or reputation for violent conduct (Graham et al, 2000; Quigley & Leonard, 2004), commercialism (Anderson, Daly, & Rapp, 2009; Kavanaugh, 2013), competition or heightened concerns about sexuality (Anderson et al, 2009; Egan & Hamilton, 2008; Wells et al, 2009), and the perception that fighting is normal, acceptable, or even expected (Bernburg & Thorlindsson, 2005; Wells, Graham, & Tremblay, 2007; Wells, Neighbors, Tremblay, & Graham, 2011) also contribute to barroom aggression.…”