The project seeks to address a measurement gap in food access research by assessing various factors in corner stores within the context of the larger food environment related to childhood obesity prevention. Using mainly qualitative approaches, a toolkit of healthy corner store measures, specific to store owners, parents, and adolescents will be developed. The long-term goal of the project is to create a toolkit with consistent and comparable measures of the healthy corner store food environment. Specific aims of the project are to: 1) identify factors that influence the successful implementation of corner store projects in specific targeted populations (store owners, parents, and adolescents), as well as barriers, in both rural and urban settings, and 2) modify existing measurement tools and develop new tools to better assess healthy food access.