Developmental science is an interdisciplinary scientific field that synthesizes perspectives from biology, psychology, and sociology in order to understand behavioral and psychological aspects of human development.[1] The field of developmental science "...is not limited to simply describing deviant behavior at a specific age, but rather examines the dynamic interplay of biopsychosocial risk and protective conditions in the course of development over an individual’s lifespan."[2] It is based on theories previously developed by such psychologists as Jean Piaget, Heinz Werner, and Lev Vygotsky, as well as on dynamic systems theory.[3] In recent years, the field has undergone a paradigm shift away from reductionism to one based on complex, interacting systems, with an increasing emphasis on change over time.[4]