Our study assessed the outcomes of implementing a researcher-developed, teacher-led preventive program in special education preschool classrooms. We evaluated outcomes that were specific to student behaviors, classroom climate, and teacher self-efficacy. As iterative components of the Pyramid Model, an early-childhood-focused iteration of the…

Health messaging can be a successful tool in encouraging pro-social behavior, such as bystander intervention in sexual violence situations. This dissertation explored the development of a social media message to encourage bystander intervention among college students using multiple theoretical frameworks: social norms approach and bystander…

Diffusion of innovations theory can be used to understand how to prevent or slow the spread of harmful behaviors, such as e-cigarette use in adolescent social networks. This study explores how different network intervention strategies could impact diffusion dynamics through network simulations based on observed social norms and e-cigarette use…

College students are at a heightened risk of experiencing depression and anxiety symptomatology and engaging in maladaptive alcohol use. Understanding how alcohol interventions impact emotional functioning is essential. One such intervention uses Deviance Regulation Theory (DRT), which posits that behavior can be modified using targeted messaging…

Anti-bullying programs can create more positive classroom environments by fostering the development of positive leaders who establish constructive norms. The social identity theory of leadership addresses stability and change within different leader profiles and identifies leader group prototypicality: the extent to which leaders are perceived to…

Students with autism spectrum disorder (ASD) who have extensive support needs (ESN) may require support to develop appropriate social behavior. School-wide Positive Behavioral Interventions and Supports (SWPBIS) is an evidence-based framework to support the social and behavioral needs of all students. As an evidence-based practice commonly used as…

The purpose of this preregistered cluster randomized trial was to examine the effectiveness of a universal social-emotional learning program when implemented under routine conditions in second-grade classrooms. Thirty-nine teachers and 332 students from 13 elementary schools participated in the trial. Teachers randomly assigned to the treatment…

Bullying and sexual harassment are commonly experienced by secondary students, yet these behaviors are seldom targeted for intervention in high schools. Norms and Bystander Intervention Training (NAB IT!) is a program designed to address bullying and sexual harassment through promoting prosocial norms and helping behaviors among high school…

The COVID-19 pandemic and related school closures greatly interfered in students' social, emotional, and academic development creating behavioral struggles after returning to school. This concurrent mixed-methods study examined teacher perceptions of student behavioral change and social-emotional learning (SEL) during the return to in-person…

This study examined the relation between both implementation fidelity and quality and the outcomes of two different anti-bullying interventions targeting distinct processes involved in bullying: moral disengagement and social norms. In total, 34 French-speaking Belgian teachers from six elementary schools were trained to deliver either the moral…

The purpose of this study was to explore the effectiveness of a universal classroom-based social-emotional learning (SEL) program for first grade students. Forty classrooms from 13 elementary schools across 3 states participated in the trial. Teachers in classrooms randomly assigned to the implementation condition were provided with free access to…

Objective: We investigated the preliminary efficacy of a tailored human papillomavirus (HPV) vaccination on-line intervention designed to increase HPV vaccination intention. Participants: Female college students (N = 101; 18-26 years), who have not received the HPV vaccine. Methods: Participants were randomized to either a control group to read…

The purposes of the current study were to 1) develop a learning burnout assessment for Thai undergraduate students and 2) examine the effects of a positive thinking training program on Thai undergraduate students' learning burnout. The study was divided into two parts: the instrumental development of the assessment tool and the implementation of…

Students with extensive support needs (ESN) are a heterogenous group of students with the most pervasive and ongoing support needs who typically receive special education services under the categories of autism spectrum disorder (ASD), intellectual disability, or multiple disabilities and often qualify to take their state's alternate assessment…

The purpose of this study was to explore the effectiveness of a universal classroom-based socialemotional learning (SEL) program for first grade students. Forty classrooms from 13 elementary schools across 3 states participated in the trial. Teachers in classrooms randomly assigned to the implementation condition were provided with free access to…