This Early-Concept Grant for Exploratory Research (EAGER) award from the National Science Foundation (NSF) Directorate for Engineering (CFDA 47.041) will advance modeling and simulation capabilities to better understand complex societal issues. The USD 198,534 grant to the Old Dominion University Research Foundation (Odurf) will fund a series of computational experiments to examine how individual behavior changes with the scale of decision-making agents in social simulations. This research aims to provide insights that can inform policy decisions related to challenges like the obesity epidemic and housing foreclosure crisis. The project includes an educational component to develop a cross-disciplinary course on modeling situations with multiple decision-makers at Old Dominion University, a minority-serving institution. No sub-awards are planned for this project, which has a performance period of August 1, 2023 to July 31, 2025.