Oxford Handbook of Identity Development

Identity is defined in many different ways in various disciplines in the social sciences and sub-disciplines within psychology. The developmental psychological approach to identity is characterized by a focus on developing a sense of the self that is temporally continuous and unified across the different life spaces that individuals inhabit. Erikson proposed that the task of adolescence and young adulthood was to define the self by answering the question: Who Am I? There have been many advances in theory and research on identity development since Erikson's writing over fifty years ago, and the time has come to consolidate our knowledge and set an agenda for future research.