DAVID BLOCK is Reader in Education in the School of Culture, Language and Communication at the Institute of Education, University of London, UK. He has published articles and chapters in a range of applied linguistics and educational journals and books. He is co-editor (with Deborah Cameron) of Globalization and Language Teaching (2002) and author of The Social Turn in Second Language Acquisition (2003) and Second Language Identities (2007). His main interests are migration, the impact of globalization on language practices of all kinds and the interface between identity and language learning.