The model developed in this paper extends Bongaarts’s nuclear family model into a general one that accounts for both nuclear and three-generation families, and which is expected to be more widely applicable. In the paper a simulation and comparison of two cohorts of women who are assumed to live out their lives under demographic conditions of China in 1950-70 and 1981 is presented. The status distribution and expected years spent in different parities, marital statuses, being the child of surviving parent(s), being a parent of living children, and having responsibility for both elderly parent(s) and young children etc. are given. The consequences of the dramatic demographic changes are clearly demonstrated. © 1988 Taylor & Francis Group, LLC.