'… an important sequel to the pioneering work of Richard and Shirley Jessor presented over 15 years ago … this work presents important data and analyses regarding crucial topics of drug use, problem behaviors, and psychosocial development from adolescence into young adulthood and provides some informative tests and expansion of problem behavior theory into young adulthood. This volume is an important contribution to the literature and a must for all students and researchers of these topics.' Contemporary Psychology