PROJECT SUMMARY Sexual assault is a persistent public health problem that affects a substantial proportion of college women and is often associated with increases in heavy drinking to cope with post-assault distress. Survivors often recover within social networks such as sororities where heavy drinking is normative, and recovery alongside heavy drinking peers can exacerbate survivors’ drinking to cope. To address this problem, the current application involves the development of a novel intervention designed to promote effective support of survivors within social networks of sororities. Support behaviors incompatible with heavy drinking are expected to increase perceived support among survivors and reduce alcohol use and related consequences among all intervention recipients. The research plan involves: (1) developing a new web-based intervention in collaboration with community stakeholders, (2) testing the feasibility of the intervention within a pilot cluster randomized trial, and (3) examining network characteristics associated with adoption of support behaviors. The objective of the overall Mentored Clinical Scientist Research Career Development Award (K08) is to provide Dr. Anna Jaffe with the research support and training needed to become an independent researcher in the field of alcohol research. Dr. Jaffe has a strong foundation researching the intersection between alcohol use and sexual assault, but requires additional training to become an intervention researcher capable of contributing to broad change by leveraging technology to administer brief interventions within social networks. Administrative support is needed to ensure the pilot cluster randomized trial is successfully completed following the critical life event of childbirth and subsequent caretaking responsibilities. Administrative support will be used to hire a research coordinator to complete essential tasks, including assisting with survey setup and testing, recruitment and retention efforts, participant payments, and data management and cleaning. This support will facilitate successful implementation of the pilot cluster randomized trial, including higher enrollment and retention, will provide pilot data to support a R01 submission to test the intervention on a larger scale and evaluate the spread of supportive behaviors through social networks. This supplement will also ensure the PI continues to focus on mentored training activities in intervention development and evaluation, implementation of social network methods and analyses, and professional development through manuscript and grant writing. Thus, administrative support to complete the K08 activities will ultimately prepare Dr. Jaffe to lead an innovative and rigorous program of research to reduce alcohol misuse after sexual assault through technology-based interventions.