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Emerging Adulthood: The Winding Road from the Late Teens through the Twenties is now available. Buy it today at Amazon.com. 
Jeffrey Jensen Arnett is a Research Professor in the Department of Psychology at Clark University in Worcester, MA. He coined the term "emerging adulthood," and he is the author of Emerging Adulthood: The Winding Road from the Late Teens through the Twenties (Oxford University Press), along with numerous scholarly articles in this area. He is also the author of the textbook Adolescence and Emerging Adulthood: A Cultural Approach (Prentice Hall). In 2005, he was a Fulbright Scholar at the University of Copenhagen, Denmark. Since 2002 he has served as Editor of the Journal of Adolescent Research. In addition, he is the author of two recent encyclopedias, the International Encyclopedia of Adolescence (two volumes, Routledge, 2007) and the Encyclopedia of Children, Adolescents, and the Media (two volumes, Sage Publications, 2007).