Identity is a problematic concept inasmuch as we recognise it now as non-fixed, non-rigid and always being co-constructed by individuals of themselves, or by people who share certain core values or perceive another group as having such values. This volume re-examines the analytical tools employed in the sociolinguistic research of 'identity' in order to assess their efficiency, establish the roles of language in the identity claims of specific communities of people, and determine the place of identity in a variety of social contexts, including work places and language classrooms. It will be of interest to academics researching sociolinguistics, applied linguistics and second language learning.