Using a randomized controlled trial, we investigated changes in both sexual harassment (SH) perpetration and victimization of 2104 middle school students in New York City who received divergent saturation and dosage levels of "Shifting Boundaries," an SH prevention program, which was represented by the length of the program. We assessed…

Diffusion can contribute to the spread of preventive intervention effects from participants to non-participants, but best practices for randomized trials prevent contamination of conditions. These practices conflict with cultural values of community benefit, which are salient among American Indians. This study embedded social network measures…

Many sexual health programs transitioned to virtual implementation during the COVID-19 pandemic. Despite its devastation, the pandemic provided an opportunity to learn about virtual compared to in-person implementation of a sexual health promotion program--El Camino. This study assessed differences in program attendance, engagement, quality, and…

A better understanding of the complex relationships between HIV knowledge, self-efficacy, perception of peer condom use, and condom-use intention is needed for improving HIV prevention among adolescents. The study analyzed survey data collected from high school students (N = 1970) in the Bahamas. Mediation and moderated mediation modeling analyses…