Background. Despite the prominence of comorbidity among substances and the recent
attention focused on trajectory‐based approaches to characterizing developmental change …

Over the past several years, there has been growing interest in identifying distinct
developmental trajectories of substance use. Using data from the RAND Adolescent/Young …

Substance use trajectories were examined from early adolescence to young adulthood
among a diverse sample of 998 youths. Analysis of longitudinal data from ages 12 to 24 …

Background: Past studies have differentiated classes of polysubstance use in adolescence,
however, the associations of adolescent polysubstance use classes with longitudinal …

BACKGROUND: Early substance use (SU) in adolescence is known to be associated with
an elevated risk of developing substance use disorders (SUD); it remains unclear though …

Objective Reductions in substance involvement into adulthood are thought to represent a
normative maturing out of substance use. However, patterns and predictors of maturing out …

Past studies highlight a narrowing gender gap and the existence of a shared etiology across
substances of abuse; however, few have tested developmental models using longitudinal …

This reprinted article originally appeared in Journal of Abnormal Psychology, 2005, Vol 114
(4), 612-626.(The following abstract of the original article appeared in record 2005-15138 …

People's alcohol use and abuse tend to increase, peak, and then decrease as they go
through the transition to adulthood, a period that spans the late teenage years through the …

Introduction Despite important advances of longitudinal research in substance use
behaviors, most studies stratify analyses by gender or race, which limits the ability to directly …