The proposed program of research will allow the PI to apply her expertise on the study of psychological acculturation and biculturalism to the European context, and also develop a European network of collaborators on these issues. Broadly speaking, the 4-year proposed research program will examine (by means of social-network, survey, and experimental methodology) some of the social and individual factors involved in the development and maintaince of a bicultural orientation among first and second-generation immigrants residing in Catalonia (Spain). The first phase will examine the links between immigrants’ personal social networks (their composition, density, clustering) and these individuals´ multiple cultural self-identifications. The second phase will involve a large psychometric study to refine the measurement and understanding of the construct of Bicultural Identity Integration (BII), an individual difference variable capturing variations in bicultural identity. The third phase will involve an experimental study examining how the expectations of the receiving society regarding acculturation affect immigrants’ own acculturation and cultural identity profiles. The fourth phase of the proposed project will involve the development of a special issue on the topic of “Multi-Cultural Identity in European Contexts” for the Journal of Cross-Cultural Psychology, as well as a small-group conference on this issue involving the contributors to this special issue and other relevant experts.