In settings of high fertility and high HIV prevalence, individuals are making fertility decisions while simultaneously trying to avoid or manage HIV. We sought to increase our understanding of how individuals dually manage HIV risk while attempting to achieve their fertility goals as part of the project entitled HIV Status and Achieving Fertility Desires conducted in Zambia in 2011. Using multi...

Scent communication plays a central role in the mating behavior of many nonhuman mammals but has often been overlooked in the study of human mating. However, a growing body of evidence suggests that men may perceive women's high-fertility body scents (collected near ovulation) as more attractive than their low-fertility body scents. The present study provides a methodologically rigorous replica...

A commonplace observation in humans is that close genetic relatives tend to avoid one another as sexual partners. Despite the growing psychological research on how antierotic attitudes develop toward relatives, few studies have focused on actual behavior. One prediction, stemming from parental investment theory, is that women should be more vigilant of reproduction-compromising behaviors, such ...

Background & aim: Demands for more children have substantial effects on couple’s fertility behaviors. The ideal number of children for most Iranian’s family is two, so that it is reasonable to study which factors determine women’s decision to have a third child. The main aim of this study was to examine factors affecting the demand for a third child (DTC). Methods: This cross-sectional study wa...

Family formation changed dramatically over the 20th century in the United States. The impact of these changes on childbearing has primarily been studied in terms of nonmarital fertility. However, changes in family formation behavior also have implications for fertility within marriage. The authors used data from 10 fertility surveys to describe changes in the timing of marital childbearing from...

Much of Africa has yet to go through a demographic transition; this Malthusian crisis of high mortality, high fertility, rapid population growth and chronic extreme poverty has been attributed to factors including the status of women, pro-natalist policies, and poverty itself. Large uncertainty exists among demographers as to the relative importance of these factors, mostly since econometric es...

Family formation changed dramatically over the twentieth century in the United States. The impact of these changes on childbearing has primarily been studied in terms of nonmarital fertility. However, changes in family formation behavior also have implications for fertility within marriage. We use data from ten fertility surveys to describe changes in the timing of marital childbearing from the...

Most existing studies on the fertility transition focus either on macro-level trends or on micro-level patterns with limited geographic scope. Much less attention has been given to the interplay between individual characteristics and contextual conditions, including geographic location. This paper contributes to closing this research gap. We investigate the relevance of geography and socioecono...