Dr. Jeffrey J. Arnett is a Research Professor in the Department of Psychology at Clark University in Worcester, Massachusetts (USA). He has also taught at the University of Missouri. During 2005 he was a Fulbright Scholar at the University of Copenhagen, Denmark. Dr. Arnett is the editor of the Journal of Adolescent Research and author of the many best-selling books.

Jeffrey has 2 children, twins Paris and Miles, born in 1999, and his wife, Lene Jensen, is also a professor at Clark University. He has frequently appeared in print media and on television, including a cover story in the New York Times Sunday magazine.