Part 1 Introduction: a new agenda for youth research, John Bynner et al. Part 2 The shaping of trajectories and biographies: metaphors of youth transitions - niches, pathways, trajectories or navigations, Karen Evans and Andy Furlong; participation and identification in risk societies - European perspectives, Ulrike Nagel and Claire Wallace; structure and agency - the new youth research agenda, Ken Roberts. Part 3 Vulnerable groups - excluded and included youth, polarization and marginalization: vulnerable youth and processes of social exclusion - a theoretical framework, a review of recent research and suggestions for a future research agenda, Bob Coles; conceptualizing youth - transitions, risk and the public and private, Pat Allatt; sensibilities and occlusions - vulnerable youth between social change and cultural context, Lynne Chisholm. Part 4 The social construction of identity: rethinking youth identities - modernist and postmodernist frameworks, Ali Rattansi and Ann Phoenix; youth identities - new challenges, Manuela du Bois-Reymond; youth research and identities - same as it ever was?, Christine Griffin. Part 5 Perspectives on citizenship and participation: participation and citizenship - a new agenda for youth politics research, Elizabeth Frazer and Nicholas Emler; youth work and citizenship, Howard Williamson; citizenship education, Ken Fogelman; perspectives on social exclusion, citizenship youth, Helena Helve; the challenge of citizenship for youth study, John Bynner. Part 6 Theory and the new agenda: youth and activity theory, Sven Morch; globalization, social exclusion and youth, Phillip Brown. (Part contents).