Final answer:
The term for households with married couples who both earn an income and have no children is 'Dinks,' signifying 'Dual Income, No Kids.'
Step-by-step explanation:
The term that refers to American households that are made up of married couples, with each partner earning an income, and who do not have children is 'Dinks.' The acronym 'DINK' stands for 'Dual Income, No Kids.' This demographic trend highlights a shift in family structures and is a reflection of changing societal values and economic circumstances that influence decisions around marriage, childbearing, and careers. Aspects of modern life such as the demand for a flexible and highly mobile workforce, the high cost of raising children, and changing concepts of marriage and the nuclear family have all contributed to the emergence of DINK households.