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Present-day hunter-gatherers (HGs) live in multilevel social groups essential to sustain a population structure characterized by limited levels of within-band relatedness and inbreeding. When these wider social networks evolved among HGs is unknown. To investigate whether the contemporary HG strategy was already present in the Upper Paleolithic, we used complete genome sequences from Sunghir, a site dated to ~34,000 years before the present, containing multiple anatomically modern human individuals. We show that individuals at Sunghir derive from a population of small effective size, with limited kinship and levels of inbreeding similar to HG populations. Our findings suggest that Upper Paleolithic social organization was similar to that of living HGs, with limited relatedness within residential groups embedded in a larger mating network.

Global population trends The increasing wealth of nations is accompanied by a fall in fertility, so that in many developed (and developing) nations, fertility rates have dropped below the replacement value of about 2.1 births per woman. This 'birth dearth', together with the ageing of populations, presents many difficult social and political problems. But, based on new cross-sectional and longitudinal analyses of the relationship between the total fertility rate and the human development index, Myrskylä et al . show that above a certain degree of economic development, fertility once again begins to rise, slowing the rate at which populations age. As a consequence, in contrast to the current popular and scientific debates, it seems likely that countries at the most advanced development stages will face a relatively stable population size, if not an increase in total population in cases where immigration is substantial. The increasing wealth of nations is accompanied by a fall in fertility such that in many developed and developing nations fertility rates have dropped below replacement value (less than 2.1 children per woman). Rapid population ageing, and in some cases the prospect of significant population decline, present difficult social and political problems. However, it is now shown that above a certain degree of economic development fertility begins to rise once again. During the twentieth century, the global population has gone through unprecedented increases in economic and social development that coincided with substantial declines in human fertility and population growth rates 1 , 2 . The negative association of fertility with economic and social development has therefore become one of the most solidly established and generally accepted empirical regularities in the social sciences 1 , 2 , 3 . As a result of this close connection between development and fertility decline, more than half of the global population now lives in regions with below-replacement fertility (less than 2.1 children per woman) 4 . In many highly developed countries, the trend towards low fertility has also been deemed irreversible 5 , 6 , 7 , 8 , 9 . Rapid population ageing, and in some cases the prospect of significant population decline, have therefore become a central socioeconomic concern and policy challenge 10 . Here we show, using new cross-sectional and longitudinal analyses of the total fertility rate and the human development index (HDI), a fundamental change in the well-established negative relationship between fertility and development as the global population entered the twenty-first century. Although development continues to promote fertility decline at low and medium HDI levels, our analyses show that at advanced HDI levels, further development can reverse the declining trend in fertility. The previously negative development–fertility relationship has become J-shaped, with the HDI being positively associated with fertility among highly developed countries. This reversal of fertility decline as a result of continued economic and social development has the potential to slow the rates of population ageing, thereby ameliorating the social and economic problems that have been associated with the emergence and persistence of very low fertility.

People's childbearing intentions change over the course of their reproductive lives. These changes have been conceptualized as occurring in response to the realization that an individual is unlikely to achieve his or her intended fertility, because of constraints such as the ”biological clock” or lack of a partner. In this article we find that changes to childbearing plans are influenced by a much wider range of factors than this. People change their plans in response to the wishes of their partners, in response to social norms, as the result of repartnering, and as the result of learning about the costs and benefits of parenthood; there are also differences between the factors that influence men's and women's decisionmaking. In a departure from existing studies in this area, we use a flexible analytical framework that enables us to analyze increases in planned fertility separately from decreases. This allows us to uncover several complexities of the decisionmaking process that would otherwise be hidden, and leads us to conclude that the determinants of increases in planned fertility are not simply equal and opposite to the determinants of decreases.

Childbearing behavior in East Asian countries has changed rapidly during the past half century from an average of five to seven children per family, to replacement-level fertility, and subsequently to unprecedentedly low levels, the lowest in the world. This article analyzes fertility trends in Hong Kong, Japan, Singapore, South Korea, and Taiwan using cohort fertility data and methods, then examines social and economic causes of the childbearing trends, and surveys policies pursued to reverse the fertility trends. Postponement of childbearing started in the 1970s with continuously fewer delayed births being \"recuperated,\" which resulted in ultra-low fertility. A rapid expansion of education and employment among women in a patriarchal environment has generated a stark dilemma for women who would like to combine childbearing with a career. Policy responses have been slow, with a more serious attempt to address issues in recent years. Thus far public and private institutions are not devoting sufficient attention to generating broad social change supportive of parenting.

When black women were brought from Africa to the New World as slave laborers, their value was determined by their ability to work as well as their potential to bear children, who by law would become the enslaved property of the mother's master. In Laboring Women: Reproduction and Gender in New World Slavery , Jennifer L. Morgan examines for the first time how African women's labor in both senses became intertwined in the English colonies. Beginning with the ideological foundations of racial slavery in early modern Europe, Laboring Women traverses the Atlantic, exploring the social and cultural lives of women in West Africa, slaveowners' expectations for reproductive labor, and women's lives as workers and mothers under colonial slavery. Challenging conventional wisdom, Morgan reveals how expectations regarding gender and reproduction were central to racial ideologies, the organization of slave labor, and the nature of slave community and resistance. Taking into consideration the heritage of Africans prior to enslavement and the cultural logic of values and practices recreated under the duress of slavery, she examines how women's gender identity was defined by their shared experiences as agricultural laborers and mothers, and shows how, given these distinctions, their situation differed considerably from that of enslaved men. Telling her story through the arc of African women's actual lives--from West Africa, to the experience of the Middle Passage, to life on the plantations--she offers a thoughtful look at the ways women's reproductive experience shaped their roles in communities and helped them resist some of the more egregious effects of slave life. Presenting a highly original, theoretically grounded view of reproduction and labor as the twin pillars of female exploitation in slavery, Laboring Women is a distinctive contribution to the literature of slavery and the history of women.

This note analyzes the association between media exposure and reproductive behavior in 48 developing countries. A summary of part of a more extensive Demographic and Health Surveys report, it shows strong connections between media exposure and the use of modern contraception, the number of children desired, and recent fertility. Television viewing is particularly important; it is assumed to expose viewers to aspects of modern life that compete with traditional attitudes toward the family and is associated with greater use of modern contraceptive methods, with a desire for fewer children, and with lower fertility. These relationships are particularly noteworthy because the data measure only the frequency of media exposure with no information about its content.

Making babies was a mysterious process in early modern England. Mary Fissell employs a wealth of popular sources - ballads, jokes, witchcraft pamphlets, prayerbooks, popular medical manuals - to produce the first account of women's reproductive bodies in early-modern cheap print. Since little was certain about the mysteries of reproduction, the topic lent itself to a rich array of theories. The insides of women's reproductive bodies provided a kind of open interpretive space, a place where many different models of reproductive processes might be plausible. These models were profoundly shaped by cultural concerns; they afforded many ways to discuss and make sense of social, political, and economic changes such as the Protestant Reformation and the Civil War. They gave ordinary people ways of thinking about the changing relations between men and women that characterized these larger social shifts. Fissell offers a new way to think about the history of the body by focusing on women's bodies, showing how ideas about conception, pregnancy, and childbirth were also ways of talking about gender relations and thus all relations of power. Where other histories of the body have focused on learned texts and male bodies, Vernacular Bodies looks at the small books and pamphlets that ordinary people read and listened to - and provides new ways to understand how such people experienced political conflicts and social change.

From theories of conception and concepts of species to museum displays of male genitalia and the politics of breastmilk, The Secrets of Generation is an interdisciplinary examination of the many aspects of reproduction in the eighteenth century. Exploring the theme of generation from the perspective of histories of medicine, literature, biology, technology, and culture, this collection offers a range of cutting-edge approaches. Its twenty-four contributors, scholars from across Europe and North America, bring an international perspective to discuss reproduction in British, French, American, German, and Italian contexts. The definitive collection on eighteenth-century generation and its many milieus, The Secrets of Generation will be an essential resource for studying this topic for years to come.

This study proposes that performative rituals—that is, verbal and physical acts that reiterate prior uses—enabled medieval women and men to negotiate the dangers and difficulties of conception and childbirth. It analyzes the rituals implicated in charms, prayers, amulets, and prayer rolls and traces the circulation of such rituals within medieval English society. Manuscript records from the Anglo-Saxon period to the late Middle Ages offer evidence of the interaction of oral and written means of communicating these rituals. Certain rituals were long-lived, though variants were introduced over time that reflected changing religious attitudes and the involvement of various interested parties, including local healers, doctors, and medical practitioners, as well as monks, friars, and users of vernacular remedy books. Although many of those who recommended or provided assistance through performative rituals were males, the practices often devolved upon women themselves, and their female companions or attendants.

New evidence from the Utah Population Database (UPDP) reveals that at the onset of the fertility transition, reproductive behavior was transmitted across generations—between women and their mothers, as well as between women and their husbands' family of origin. Age at marriage, age at last birth, and the number of children ever born are positively correlated in the data, most strongly among first-born daughters and among cohorts born later in the fertility transition. Intergenerational ties, including the presence of mothers and mothers-inlaw, influenced the hazard of progressing to a next birth. The findings suggest that the practice of parity-dependent marital fertility control and inter-birth spacing behavior derived, in part, from the previous generation and that the potential for mothers and mothers-in-law to help in the rearing of children encouraged higher marital fertility.