Introduction / Richard J. Crisp -- Social identity complexity and acceptance of diversity / Marilynn B. Brewer -- Facilitating the development and integration of multiple social identities : the case of immigrants in Québec / Catherine E. Amiot and Roxane de la Sablonnière -- Costs and benefits of switching among multiple social identities / Margaret Shih, Diana T. Sanchez and Geoffrey C. Ho -- Multicultural identity : what it is and why it matters / Angela-Minh,Tu D. Nguyen and Verónica Benet-Martínez -- What I know in my mind and where my heart belongs : multicultural identity negotiation and its cognitive consequences / Carmit T. Tadmor, Sun No, Ying-yi Hong and Chi-yue Chiu -- Multiculturalism and tolerance : an intergroup perspective / Maykel Verkuyten -- Diversity experiences and intergroup attitudes / Christopher L. Aberson -- The effects of crossed-categorizations in intergroup interaction / Norman Miller, Marija Spanovic, and Douglas Stenstrom -- Complexity of superordinate self-categories and ingroup projection / Sven Waldzus -- The categorization-elaboration model of work group diversity : wielding the double-edged sword / Daan van Knippenberg and Wendy P. van Ginkel -- Divided we fall, or united we stand? : how identity processes affect faultline perceptions and the functioning of diverse teams / Floor A. Rink and Karen A. Jehn -- Combined effects of intergroup contact and multiple categorization : consequences for intergroup attitudes in diverse social contexts / Katharina Schmid and Miles Hewstone -- The application of diversity-based interventions to policy and practice / Lindsey Cameron and Rhiannon N. Turner