http://repub.eur.nl/res/aut/48574/ List of Publications en http://repub.eur.nl/static-eur/img/logo.png http://repub.eur.nl http://repub.eur.nl/res/pub/37767/ 2013-01-01T00:00:00Z Building on uncertainty-identity theory and the social identity theory of leadership we hypothesized that self-uncertainty would be associated with greater support for autocratic leaders, and less support for non-autocratic leaders. We surveyed organizational employees (N ¼ 215); assessing the effect of self-uncertainty and how autocratic they perceived their organizational leader to be on measures of leader support. As predicted, less self-uncertain participants were more supportive of a non-autocratic than autocratic leader, whereas the opposite was the case for more self-uncertain participants—they were more supportive of an autocratic than non-autocratic leader. The effect was mediated by perceived group prototypicality of the leader. Implications for uncertainty-identity theory and for a wider analysis of the role of uncertainty in leadership are discussed. http://repub.eur.nl/res/pub/32834/ 2012-04-01T00:00:00Z Intergroup leadership-leadership of collaborative performance of different organizational groups or organizations-is associated with unique intergroup challenges that are not addressed by traditional leadership theories. To address this lacuna, we describe a theory of intergroup leadership. Firmly grounded in research on social identity and intergroup relations, the theory proposes that effective intergroup performance rests on the leader's ability to construct an intergroup relational identity. We describe key leadership actions to establish such an identity.