Founded in 1957, Life Course Development (LCD) aims to expand knowledge of social relationships across the lifespan and their implications for mental and physical health. LCD examines a wide variety of relationships, identifying the aspects of relationships that are most beneficial and/or harmful to health and whether these associations vary by demographic and contextual factors. With this knowledge, the program hopes to help in the design and implementation of intervention and prevention programs.

Founded in 1968, the Panel Study of Income Dynamics PSID is the world’s longest-running household panel survey. It has made way for the study of dynamism in social and behavioral processes, resulting in over 4,000 peer-reviewed publications. The National Science Foundation, the study’s lead sponsor, named PSID as one of its 60 most significant innovations.