Theoretical Framework. The HCSI is grounded in social cognitive theory (SCT). By incorporating the environment, personal factors (including cognitions) and behavior, SCT provides a framework for designing, implementing, and evaluating behavioral change. It supports traditional behavioral methods (positive reinforcement, specific behavioral outcomes). Moreover, it underscores the critical role of the social environment (modeling, social reinforcement, social norms - as well as reducing the antecedents for purchasing unhealthy foods) in affecting change. Our initial work has assessed the feasibility of implementing the HCSI and collecting data (see preliminary studies). We are poised to test the efficacy of the HCSI in the proposed study.