The Lewis Foundation's mission is to advance the science of interpersonal relationships. They are dedicated to supporting research and projects that explore crucial aspects of interpersonal dynamics and their impact on psychological and physical health or dysfunction. Furthermore, the Foundation focuses on the psychoeducational aspects of these systems, aiming to disseminate valuable information to health care professionals, educators, and the public.
The Lewis Foundation offers grants ranging from $5,000 to $30,000 for research projects and educational or service programs that aim to improve understanding and health of interpersonal relationships. The grants support collaborative efforts across professional disciplines, focusing on aspects of relationships that affect health, evaluations of relevant services, and educational programs. While not supporting annual funding or multi-grantor projects without secured funds, they encourage pilot projects with potential for larger, future funding. The supported areas include research on interpersonal relationships, connections between these relationships and health, and programs focusing on family or couple's psychological health, as well as the dissemination of information on interpersonal systems to professionals and the public.