The legalization of medical and recreational marijuana has raised concerns about a
potential increase in the availability and illegal use of marijuana by adolescent minors. To …

Turning point, a key concept in the developmental life course approach, is currently
understudied in the field of substance abuse, but merits further research. A turning point …

Growth mixture modeling (GMM; Muthen, 2001, 2002, Muthen & Shed den, 1999) has
become an increasingly popular tool for exploring hetero geneity in developmental research …

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 …

Worldwide, criminologists have long been interested in the longitudinal patterning of
criminal activity. Recently, methodological and statistical advances have “caught up” with …

In this chapter we embed considerations of mental health--particularly in terms of overall
well-being, substance use, antisocial behavior, and depressive affect--within the experience …

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 …

Adolescence is often described as a time of experimentation with risky or problem behaviors
(Arnett, 2000), and substance use is one such behavior that is initiated during this age …

Purpose Cannabis (marijuana) smoke and tobacco smoke contain many of the same potent
carcinogens, but a critical—yet unresolved—medical and public-health issue is whether …

ABSTRACT BACKGROUND Substance use is prevalent and is associated with academic
performance among adolescents. Few studies have examined the association between …