Many studies have examined significant factors associated with school delinquency among adolescents, including relationship violence, property damage, and other serious threats to students' safety. However, students' coping behaviors after being victims of or witnesses to violence and other forms of delinquency have not been thoroughly examined.…

There is little information available on the topic of poor school satisfaction as a risk factor for cannabis use among adolescents. We examined if there was an association between poor school satisfaction, school class cannabis use and individual cannabis use. Further, we investigated if many cannabis users within the school class statistically…

Presents examples of types of analyses that can be employed in cross-national comparisons of marijuana using samples from U.S. data. The data illustrate basic trends in use over time and the differences between demographic groups in the U.S. Suggests uniform data collection methods would help towards identifying marijuana use as a world-wide…

Summarizes findings of longitudinal study on the relationship between marijuana use and later delinquency and problem behaviors. These studies describe the magnitude of the longitudinal and cross-sectional relationships. Cross-sectional findings measured early in adolescence are strongest. Findings suggest that the nature of the relationship is…

Examines the many effects of marijuana use on the lungs. States that patients with pre-existing immune deficits are particularly vulnerable to marijuana-related pulmonary infections. However, warns that habitual use of marijuana may lead to respiratory cancer must await epidemiological studies, which are now possible since 30 years have passed…

Introduces special issue that collectively presents a substance abuse prevention approach that is part of a program called Prevention Engineering. The model emphasizes the measurement of indicators of substance abuse problems, particularly with marijuana use. Articles include topics on epidemiology; evidence of the harmful and helpful uses of…

Reviews studies that examined perceived risk or beliefs about harmful effects associated with marijuana use. Perceived risk was construed as consisting of at least four areas (physical harm; parental disapproval; peer disapproval; fear of arrest). Perception of risk varied with several factors including age and gender. Secondary data analysis was…

Synthesizes evaluation of drug use programs (N=37) in schools for grades 6-12 by coding program characteristics and calculating weighted effect sizes (WES) for marijuana use. Program type and sample size were found to be significant predictors of program effectiveness. The primary finding for prevention program planning is that interactive…

Analyzes correlates of marijuana use based on 3,690 effect sizes coded from 86 prospective longitudinal studies. Summarizes findings on strength of relationships for categorizing predictor variables, and implications of these relationships. Findings are relevant for intervention programmers and policymakers since they identify characteristics of…

Outlines factors to consider when planning prevention, treatment, or abstinence maintenance intervention for drug abuse, particularly marijuana abuse in schools. Discusses literature on effectiveness of anti-drug campaigns on drug use; reviews spectrum of mental health interventions; and provides examples of programming. Examines role that…