Before revision: alt=A man, woman, and two children smiling outside of a house| An American nuclear family composed of the mother, father, and their children, A nuclear family (also known as an elementary family, atomic family, cereal packet family or conjugal family) is a family group consisting of parents and their children (one or more), typically living in one home residence.
After revision: alt=A man, woman, and two children smiling outside of a house| A sigma nuclear family composed of the mother, father, and their children, A nuclear family (also known as an elementary family, atomic family, cereal packet family or conjugal family) is a family group consisting of parents and their children (one or more), typically living in one home residence.