INTRODUCTION Social Identity Theory in Retrospect and Prospect - Rupert Brown and Dora Capozza PART ONE: THEORETICAL PERSPECTIVES Models, Meanings and Motivations - Kay Deaux A Multidimensional Model of Identity - Stephen Worchel, Jonathan Iuzzini, Dawna Coutant, and Manuela Ivaldi Relating Individual and Group Identities to Intergroup Behaviour PART TWO: INGROUP BIAS: MEASURES AND CONDITIONS Valence-Dependent Probability of Ingroup Favouritism between Minimal Groups - Sabine Otten and Am[ac]elie Mummendey An Integrative View on the Positive-Negative Asymmetry in Social Discrimination From Incorrect Deductive Reasoning to Ingroup Favouritism - Nathalie Scaillet and Jacques-Philippe Leyens Individualism, Collectivism and Social Identity Theory - Dora Capozza, Alberto Voci, and Orazio Licciardello Comparative Identity, Category Salience and Intergroup Relations - Maria Ros, Carmen Huici, and Angel G[ac]omez Measuring Prejudice - Anne Maass, Luigi Castelli, and Luciano Arcuri Implicity versus Explicit Techniques PART THREE: SOCIAL IDENTITY THEORY AND CHANGE IN INTERGROUP RELATIONS Superordinate Goals versus Superordinate Identity as Bases of Intergroup Cooperation - Marilynn B Brewer The Common Ingroup Identity Model for Reducing Intergroup Bias - Samuel L Gaertner, John F Dovidio, Jason A Nier, Brenda S Banker, Christine M Ward, Melissa Houlette, and Stephanie Loux Progress and Challenges Multiple Categorization and Social Identity - Richard J Crisp and Miles Hewstone Categorization and Intergroup Anxiety in Intergroup Contact - Katy Greenland and Rupert Brown CONCLUSION New Trends in Theory and Research - Dora Capozza and Rupert Brown