Jeffrey Jensen Arnett is a Research Professor in the Department of Psychology at Clark University in Worcester, Massachusetts. During 2005 he was a Fulbright Scholar at the University of Copenhagen, Denmark. He is the editor of the Journal of Adolescent Research, the top journal on adolescent development. Dr. Arnett is the originator of the theory of emerging adulthood (on ages 18-29) and author of the book Emerging Adulthood: The Winding Road from the Late Teens Through the Twenties, published in 2004 by Oxford University Press. For more information, see www.jeffreyarnett.com.