Patterns of Marijuana Use and Physical Health Indicators Among Canadian Youth

The current study adds to our growing understanding of the health of Canadian youth with differing marijuana use trajectories by examining how marijuana use fre- quency is related to physical health indicators in ado- lescence and young adulthood. We extend past research by examining how trajectories of marijuana use are related to multiple physical health indicators; subjective health, health-promoting behaviours, body mass index, serious injuries and sexual risk behaviours.

Longitudinal Associations Between Features of Toxic Masculinity and Bystander Willingness to Intervene in Bullying among Middle School Boys

Little work has examined how toxic masculinity constructs such as (lack of) empathy, positive attitudes surrounding bullying and sexual harassment, social dominance orientation, and homophobic bullying are related to changes in WTI during adolescence. Thus, the current study used growth mixture modeling to examine the extent to which correlates of toxic masculinity are associated with longitudinal trajectories of WTI.

Adolescent Patterns of Peer Victimization - Concurrent and Longitudinal Health Correlates

We examine how heterogeneity in adolescent experiences of peer victimization impact health in adolescence and young adulthood. We include multiple indicators of mental health - internalizing symptoms (i.e., depressive and anxiety symptoms), externalizing symptoms (i.e., attention deficit hyperactivity disorder (ADHD) symptoms, oppositional defiant disorder (ODD) symptoms, and conduct problems), and substance use (i.e., smoking, heavy drinking, marijuana and illicit drug use). We also use multiple measures of physical health - subjective health (i.e., physical symptoms and physical self-concept), health-promoting behaviors (i.e., physical activity, healthy eating practices, and sleep duration and problems), and cardiometabolic risks (i.e., BMI waist circumference, and hypertension). In examining young adult health, we directly control for earlier (i.e., baseline) symptoms in order account for stability in health over time.

Applying Social Cognitive Theory to Explore Relational Aggression across Early Adolescence - A Within- and Between-Person Analysis

The present study builds on the relational aggression research among adolescents by longitudinally exploring individual and interpersonal factors identified through social cognitive theory and social infor- mation processing theory.

Transitions in the Use of Multiple Substances from Adolescence to Young Adulthood

In this study, we add to this literature by examining transitions among classes of four substances (i.e., cigarettes, binge drinking, marijuana, and illicit drugs) in a large sample followed for a decade from adolescence (ages 12–18) to young adulthood (ages 22–28).

Social Ecological Determinants of Substance Use Treatment Entry Among Serious Juvenile Offenders From Adolescence Through Emering Adulthood

Applying a social–ecological framework, this study aims to fill a gap in the literature by investigating factors in various domains (individual, familial, peer, and neighborhood) separately and simultaneously to determine risk and protective factors for treatment entry among serious juvenile offenders over the course of 7 years.

Exploring the Social-Ecological Determinants of Physical Fighting in U.S. Schools - What about Youth in Immigrant Families?

Our study explores the determinants of fights in school among immigrant youth within social-ecological contexts.

Are the Risk and Protective Factors Similar for Gang-Involved, Pressured-to-Join, and Non-Gang-Involved Youth? A Social-Ecological Analysis

The aim of our study is to identify subgroups of youth (i.e., current or former gang members, youth who resisted gang membership, and nongang youth) who have experienced multiple levels of risk and protective factors for gang involvement.