The main active project in the DCN Lab is the Preschool Problem Solving Study, which is a longitudinal study spanning preschool through young adulthood with a focus on the development of executive control and implications for mental and physical health. The sample includes families recruited from the community when the participating child was in preschool. Families have participated in regular data collection (including lab visits, home visits, and remote data collection) throughout the preschool, elementary school and adolescent years. A variety of data collection methodologies have been employed across this longitudinal study including neuropsychological tasks, school and home observations, actigraphy, mobile assessments, and questionnaires. A newly funded phase of the project will continue to follow participants into young adulthood with neuroimaging measures.