Jeffrey Jensen Arnett is a Research Professor in the Department of Psychology at Clark University in Worcester, Massachusetts, USA. He is the editor of the Journal of Adolescent Research and author of the book Emerging Adulthood: The Winding Road from the Late Teens Through the Twenties, published in 2004 by Oxford University Press. Marion Kloep is a Professor of Psychology at the University of Glamorgan, Scotland. She has conducted research projects on human development in Scandinavia, Germany, Great Britain, Turkey and Albania. For the last fifteen years, she has worked in close co-operation with Leo B. Hendry. Leo B. Hendry is Professor of Psychology at the University of Glamorgan and… Emeritus Professor at the University of Aberdeen. He has written over 150 research journal articles, 30 book chapters and 15 books, which have been published in several languages including Spanish, Italian, Japanese, Korean, Norwegian and Danish. Jennifer L. Tanner is a Visiting Assistant Research Professor at The Institute for Health, Health Care Policy and Aging Research at Rutgers University, USA. Dr. Tanner has contributed theoretical work on emerging adulthood, specifically the theory of recentering, and has contributed empirical research on pathways of mental health problems through emerging adulthood and beyond.