Urie Bronfenbrenner, Russian-American psychologist and ecologist (b. 1917)
Urie Bronfenbrenner (April 29, 1917 – September 25, 2005) was a Russian-born American psychologist who is most known for his ecological systems theory. His work with the United States government helped in the formation of the Head Start program in 1965. Bronfenbrenner's ability research was key in changing the perspective of developmental psychology by calling attention to the large number of environmental and societal influences on child development.