attachment to other group members. Strongly fused persons are especially inclined to endorse pro-group action when either the personal or the social self is salient, when physiological arousal is high, or when they perceive that group members share essential qualities (e.g., genes, core values) with one another. Moreover, feelings of personal agency, perceptions of family-like ties to other group members, and a sense of group-related invulnerability mediate the link between identity fusion and pro-group behaviors. All of these effects emerge while controlling for identification, which predicted extreme sacrifice for the group weakly if at all. Moreover, identity fusion is associated with actual extreme behaviors, such as willingness to volunteer for front-line duty among Libyans during the 2011 revolution. By specifying some of the key antecedents of extreme pro-group behavior as well as the role of the personal self and relational, family like ties in such behavior, the identity-fusion approach fills an important explanatory gap left largely unaddressed by earlier perspectives on group processes. Academic service Swann was the 2010 President of the Society of Experimental Social Psychology. See also Identity fusion References Further reading External links William Swann's Webpage at the University of Texas Social Psychology Network Professional Profile Living people University of Minnesota alumni 21st-century American psychologists Social psychologists University of Texas at Austin faculty 1952 births 20th-century American psychologists