“…First, that leadership is indeed contingent upon leaders being perceived to be prototypical of a social identity that they share with followers (Duck & Fielding, 1999, 2003Hogg, Hains, & Mason, 1998;Jetten, Duck, Terry, & O'Brien, 2002;Platow, van Knippenberg, Haslam, van Knippenberg, & Spears, in press;van Knippenberg & Hogg, 2003b;all after Turner, 1991). Second, that in order to be influential and effective, leaders need to represent and define social identity in context (Ellemers, de Gilder, & Haslam, 2004;Platow, Hoar, Reid, Harley, & Morrison, 1997;Platow & van Knippenberg, 2001). …”