Search

This paper examines the effects of the fertility desires of marital partners on subsequent fertility. In particular, we attempt to identify the role played by disagreement between the spouses in predicting the couple's fertility outcome. The results indicate that when husband and wife disagree about whether or not they want another child, the fertility desires of both partners are equally important in determining whether the couple actually have an additional birth. The dominance of men in sub-Saharan African societies tends to operate in the present study only in the initial stages of a couple's reproductive lives (associated with four or fewer children). This tendency is offset by the stronger influence of the wife's desire in the later stages. Thus, we conclude that fertility research in sub-Saharan Africa should solicit information from men and women, and any programme or policy that aims to promote fertility decline in the region must involve both sexes. [ABSTRACT FROM AUTHOR]

This study uses data from the 1990 Census of China for Xinjiang Uighur Autonomous Region to examine phenomena that, to date, have been examined primarily at the national level: fertility and sex ratios at birth of women who already have at least one surviving child. Comparing data for Uighurs, Kazakhs, Hui, and Han, it finds enormous differences in fertility between the nationalities in the presence of high levels of fertility control. Also, for all four nationalities the extent of fertility control is dependent on the sex of surviving children. Women who had no previous sons, or who had many daughters, were likely to continue to try to have children even at ages and parities past which they would normally have stopped childbearing. Finally, disproportionately feminine sex ratios at birth are found for couples who have had several sons and no daughters. Hence, researchers interested in the question of unusual sex ratios at birth in China need to account for `missing boys' as well as `missing girls' [ABSTRACT FROM AUTHOR]

Fecundability - the monthly probability of conception - incorporates both physiological and behavioural elements that vary across a woman's reproductive life span. How much of the variation in fecundability during the reproductive period can be attributed to age- related changes in physiology, and how much to variation in coital frequency? We use a mathematical model of fecundability to consider this question. Intra-uterine mortality has an important effect on fecundability: effective fecundability (the likelihood of a conception that results in a live birth) is less than half of total fecundability (the likelihood of any conception) at nearly all ages when coital frequency is held constant. The change in effective fecundability with increasing coital frequency is non-linear: it declines with increasing frequency. At all coital frequencies, the effects of increasing physiological age are greatest at the youngest and oldest reproductive ages, while between the ages of 20 and 30 physiological change has only a small impact on effective fecundability. [ABSTRACT FROM AUTHOR]