Changes in childlessness in the United States: A demographic path analysis.

Summary This paper describes changes in the incidence of marital childlessness among United States women since 1940 and tests a model to explain recent observed trends toward increasing childlessness. Based on U.S. Bureau of the Census sources, data are presented that indicate a substantial increase in childlessness for married women under 30 years of age since 1960. A path model is developed based on previous research on childlessness, in an attempt to explain this change. The model is composed of 1960-70 changes in (1) mean age at first marriage, (2) mean educational attainment, (3) the proportion of women in the labour force, (4) the proportion of women enrolled as students, (5) the incidence of marital disruption, and (6) the proportion of women living in urban environments. Using quarter-year age cohort data derived from the 1960 and 1970 1/100 Public Use Samples the results indicate that a substantial part of the increase in childlessness csn be explained by this model. Particularly important were increased enrolment of married women in education, labour force participation, and mean age of first marriage. The results suggest the relevance of structural changes along with birth expectation attitudes in predicting trends in childlessness in the United States.