Despite efforts to reduce and prevent incidents, bullying behaviors remain prevalent in schools, leading to poor outcomes for all involved. While the Olweus Bullying Prevention Program is one of the most extensively implemented school environment interventions in the USA, it has yet to yield consistently positive results across contexts,…

The leading cause of preventable disease, disability, and death in the United States is tobacco product use. The 2022 National Youth Tobacco Survey, which was completed in 2022, showed that the e-cigarette epidemic among youth continues to remain a public health threat. The survey revealed that over 2.5 million middle and high school students…

E-cigarettes are a popular type of nicotine product among youth in the United States. Hispanic youth, one of the fastest growing populations in the United States, are second only to white youth for e-cigarette use. Analysis of the Parents' Resource Institute for Drug Education data was conducted to determine past 30-day e-cigarette use among…

This study examined the impact of a classroom-level component of The Inclusive Skill-building Learning Approach (ISLA), an instructional and restorative alternative to exclusionary discipline, on student behaviors and school discipline practices in middle schools. Intervention implementation, classroom observations, and all other data collection…

Background: Effective implementation strategies are needed to enhance the success of evidence-based prevention programs. The current study evaluates the effects of two implementation strategies on teachers' implementation of an evidenced-based HIV intervention. Methods: Using our 7-item pre-implementation school screening tool, we identified…

As evidence-based interventions are scaled, fidelity of implementation, and thus effectiveness, often wanes. Validated fidelity measures can improve researchers' ability to attribute outcomes to the intervention and help practitioners feel more confident in implementing the intervention as intended. We aim to provide a model for the validation of…

It should be noted that about a year after this researcher began work on this dissertation, he became seriously ill, greatly interfering with his ability to function. In 2019 he was diagnosed with Idiopathic Pulmonary Fibrosis, a terminal lung disease. As his physical condition continued to worsen, work on the dissertation came to practically a…

Positive Behavioral Interventions and Supports (PBIS) is a widely-used multi-tiered prevention framework that embeds a systems approach for establishing behavioral supports for all students, across all levels of need, to achieve social, behavioral, and academic success. A growing body of research has documented the effectiveness of PBIS in schools…

This study examined the impact of a classroom-level component of The Inclusive Skill-building Learning Approach (ISLA), an instructional and restorative alternative to exclusionary discipline, on student behaviors and school discipline practices in middle schools. Intervention implementation, classroom observations, and all other data collection…

Identifying factors that help or hinder the implementation of school environment interventions such as the Olweus Bullying Prevention Program (OBPP) is needed to inform strategies that bolster implementation quality in low-income urban middle school settings. We used qualitative methods to identify supports and barriers for OBPP implementation…

Students at risk of suicide can be identified effectively through school-based prevention programs such as Signs of Suicide (SOS), which incorporate both psychoeducation and screening components. Prior research has focused on high school students; however, there is limited research in middle schools, and even less is known of school staff's…

Large-scale, evidence-based interventions face challenges to program fidelity of implementation. We developed implementation strategies to support teachers implementing an evidence-based HIV prevention program in schools, Focus on Youth in The Caribbean (FOYC) and Caribbean Informed Parents and Children Together (CImPACT) in The Bahamas. We…

In this systematic review, we evaluated the quality and rigor of the current evidence base for the Second Step social-emotional learning program in middle schools. Eleven studies were coded using the "Council for Exceptional Children Standards for Evidence-Based Practices in Special Education" with an 80% weighted criterion. We…

In this dissertation study, we investigated the social validity of Tier 1 practices within tiered systems, with specific foci on the Comprehensive, Integrated, Three-Tiered (Ci3T) model of prevention and the high school context. Specifically, we began by outlining the challenges associated with implementing Tier 1 practices, particularly within…

LifeSkills Training is the only program to prevent substance use disorder among adolescents that has evidence of effects on substance use outcomes from multiple randomized controlled trials. Evaluations have shown that the version for middle school students reduces their use of substances in high school, but these studies were conducted in the…