The Fielding Ph.D. in Infant and Early Childhood Development (IECD) with an emphasis in mental health and developmental disorders is a degree serving multiple disciplines as they apply their work using the lens of infant mental health (IMH) and development. The program was initiated by Stanley Greenspan, MD, and Serena Weider, Ph.D., to promote research supporting relationships, individual differences, and development (DIR®) in working with infants, children, and their families. The field of Infant and Early Childhood Development is exciting and highly rewarding. The first years of life lay the foundation for all domains of human development, including the basic relationship building blocks needed for the capacities to feel, love, adapt, and develop a sense of self. The program is interprofessional in structure, including mental health professionals (Clinical and counseling psychologists, MFT, SW), OT, PT, SLP, medical professionals (MD, RN), social services professionals as well as educators and policymakers.