Given the prevalence of alcohol and cannabis co-use among college students, prevention for co-use is crucial. We examined hypothetical receptiveness to substance-specific interventions among students who reported co-use. Students who use alcohol and cannabis were more receptive to alcohol interventions than cannabis interventions. Campus…

Youth are particularly vulnerable to adverse outcomes from substance use, and there is limited evaluated drug education targeting youth in Canada or the United States of America (US). This scoping review identified and synthesized existing literature on evaluated harm reduction substance use education programs for school-aged youth in Canada and…

This review analyzed the effectiveness of mandated substance use interventions in reducing future cannabis or other illicit drug use. Findings indicated that early decreases in cannabis and other drug use are commonly reported among students participating in mandated interventions. The longer time elapses post-intervention, the more likely…

Substance use in adolescence is a significant public health issue, particularly in early-to-mid adolescence, which represents a window of risk in the etiology of substance abuse and dependence. Substance use during this development period often results from affiliation with deviant peers, who model, facilitate, and reinforce use. Existing…

Reducing youth cannabis use in Canada is a public health priority with schools of interest as a potential modifier of behavior and as a venue for prevention programming. This work aimed to provide a basis for future policy and programming by evaluating pre-legalization cannabis use change patterns in schools and the impact of school…

This dissertation adds to the economic study of gun and marijuana laws. Chapter 1 studies the impact of stand your ground laws (SYGs) on traffic fatalities. Chapter 2 investigates the effects of campus concealed carry laws (CCCs) on higher education outcomes. Chapter 3 looks at the impact of medical marijuana laws (MMLs) on youth crimes. The first…

There is scant empirical work on associations between current and past cannabis use in parents of young children. As recreational cannabis use is now legal in nearly half of states in the U.S., cannabis use is becoming more ubiquitous. In the current study, parents of toddler and pre-school age children were randomly assigned to participate in an…

We present results of a randomized, controlled, efficacy trial of a handbook intervention for parents of first-year college students. The aim of the interactive intervention was to decrease risk behaviors by increasing family protective factors. The handbook, based in self-determination theory and the social development model, provided…

Background: Given its ability to exacerbate health inequities through its disproportionate impact on low-income communities, the need exists to better understand factors that influence substance use among adolescents. Moreover, given its multi-etiological nature, preventing adolescent substance use requires addressing intrapersonal, interpersonal,…

Bullying and mental health problems are pressing concerns for adolescents. Given their burden, we need to find efficacious ways to prevent these experiences. However, existing prevention programs tend to be single-issue and may not focus on the universal capacities required to reduce these problems among youth. To this end, we evaluated the…

The misuse of alcohol and other drugs is a health concern for National Collegiate Athletic Association (NCAA) level student-athletes. NCAA Division II level student-athletes from a State-Supported Regional University (SSRU) were part of a CHOICES Grant program which aided the athletic department as it partnered with other campus departments in the…

This study investigated whether the presence of school-based health centers (SBHCs) was associated with six substance use behaviors among sexual minority youth (SMY) and their heterosexual peers. Data from the 2015 Oregon Healthy Teens Survey, including 13,608 11th graders in 137 schools (26 with SBHCs) were used in the current study. Multilevel…

This paper presents the rationale and content of PASS, a Danish school-based prevention program targeting cannabis-culture-related beliefs among high school students (i.e. typically 15-19 years). The objective of the program is to prevent or delay initiation of cannabis use and limit use among students who already initiated. PASS is a combined…

Background: Negative attitudes towards substance use and Substance Use Disorders (SUDs) are among the commonly cited barriers to screening and treating these disorders by physicians. These negative attitudes have also been reported in medical students. The aim of this study was to examine attitudes of medical students in Israel towards nicotine,…

Background: Participation in extracurricular activities can have positive effects on youth, with greater participation associated with higher academic as well as better socioemotional and behavioral outcomes. Little research has examined differential effects of in-school and out-of-school activities. Methods: This study examines in-school and…