This study sought to identify trajectories of marijuana use in the Seattle Social Development
Project (n= 808) sample from age 14 through 30, and to examine the extent to which …

Purpose The purpose of this study was to describe historical trends in rates of recent
substance use and associations between marijuana and other substances, among US high …

This study used latent growth mixture modeling to identify discrete developmental patterns of
marijuana use from early adolescence (age 13) to young adulthood (age 23) among a …

Objective: Given the high prevalence of marijuana use among college students, it is
imperative to determine the factors that may reduce risk of problematic marijuana use and/or …

Background and Objectives Marijuana is the most commonly used illicit drug among college
students, with heavy use leading to negative outcomes. Use of marijuana for medical and …

Introduction Research is needed to examine trajectories of tobacco use beyond cigarette
smoking, particularly during emerging middle young adulthood, and to identify distinct …

This study examines the pattern of marijuana use among respondents who have passed the
age of risk of onset, as well as some of the correlates related to the initiation and current use …

This investigation studied the association between developmental trajectories of marijuana
use extending from adolescence to age 32 and later antisocial behavior at age 37. Semi …

Background. This study identified similarities and differences in risk factors for marijuana use
initiation from grades 7 to 8, grades 8 to 9, and grades 9 to 10, and examined differences …

Purpose As marijuana laws have become more permissive, survey data on adolescents in
the United States have shown an increase in marijuana-specific risk factors, particularly in …