In this webinar, researchers from the Social Action Lab at the University of Pennsylvania will discuss a novel, virtual social-behavioral intervention, GROV (Grid for Reduction of Regional Vulnerability), which is funded by the National Institute on Drug Abuse (NIDA) under the DP01 mechanism led by PI Dolores Albarracin. The presentation will showcase how the intervention seeks to foster effective social regulation of community challenges as a way of promoting HIV and HCV testing, preventing overdoses, seeking mental and physical health treatments, establishing social relationships, etc. The research team will delve into the intervention’s design and procedures and share preliminary results during the webinar, followed by a question-and-answer session for attendees.