... B. Swann & Bosson, 2010), close relationships (Clark & Lemay, 2010), prosocial behavior (Penner, Dovidio, Piliavin, & Schroeder, 2005), and aggression (Bushman & Huesmann, 2010). Over the last two decades theoretical interest has focused on how the self may be merged or overlap with others and how this self-other overlap influences different intrapersonal and interpersonal outcomes (Aron & Aron, 1996, 1997Aron, McLaughlin-Volpe, et al., 2004;Aron, Aron, Tudor, & Nelson, 1991;Batson, 1987Batson, , 1991Batson, , 1997Batson et al., 1997;Davis, Conklin, Smith, & Luce, 1996;Goldstein & Cialdini, 2007;Myers & Hodges, 2012;Neuberg et al., 1997). Furthermore, social psychological theory and research suggest that self-other overlap has important implications for prosocial behavior in close and non-close relationships Maner et al., 2002;Neuberg et al., 1997). ...