Fertility rates and population growth influence economic development. The marked declines in fertility seen in some developing nations have been accompanied by slowing population growth, which in turn provided a window of opportunity for rapid economic growth. For many sub-Saharan African nations, this window has not yet opened because fertility rates have not declined as rapidly there as elsewhere. Fertility rates in many sub-Saharan African countries are high: the total rate for the region is estimated to be 5.1 births per woman, and rates that had begun to decline in many countries in the region have stalled. High rates of fertility in these countries are likely to contribute to continued rapid population growth: the United Nations projects that the region's population will increase by 1.2 billion by 2050, the highest growth among the regions for which there are projections. In June 2015, the Committee on Population organized a workshop to explore fertility trends and the factors that have influenced them. The workshop committee was asked to explore history and trends related to fertility, proximate determinants and other influences, the status and impact of family planning programs, and prospects for further reducing fertility rates. This study will help donors, researchers, and policy makers better understand the factors that may explain the slow pace of fertility decline in this region, and develop methods to improve family planning in sub-Saharan Africa.

This overview includes chapters on child mortality, adult mortality, fertility, proximate determinants, marriage, internal migration, international migration, and the demographic impact of AIDS.

The United States is in the midst of a major demographic shift. In the coming decades, people aged 65 and over will make up an increasingly large percentage of the population: The ratio of people aged 65+ to people aged 20-64 will rise by 80%. This shift is happening for two reasons: people are living longer, and many couples are choosing to have fewer children and to have those children somewhat later in life. The resulting demographic shift will present the nation with economic challenges, both to absorb the costs and to leverage the benefits of an aging population. Aging and the Macroeconomy: Long-Term Implications of an Older Population presents the fundamental factors driving the aging of the U.S. population, as well as its societal implications and likely long-term macroeconomic effects in a global context. The report finds that, while population aging does not pose an insurmountable challenge to the nation, it is imperative that sensible policies are implemented soon to allow companies and households to respond. It offers four practical approaches for preparing resources to support the future consumption of households and for adapting to the new economic landscape.

Fertility, Biology, and Behavior: An Analysis of the Proximate Determinants presents the proximate determinants of natural fertility. This book discusses the biological and behavioral dimensions of human fertility that are linked to intermediate fertility variables. Organized into nine chapters, this book begins with an overview of the mechanisms through which socioeconomic variables influence fertility. This text then examines the absolute and relative age-specific marital fertility rates of selected populations. Other chapters consider the trends in total fertility rates of selected countries, including Colombia, Kenya, Korea, Indonesia, Mexico, Pakistan, France, and United States. This book discusses as well the effects of deliberate marital fertility control through contraception and induced abortion. The final chapter deals with the management of sex composition and implications for birth spacing. This book is a valuable resource for reproductive physiologists, social scientists, demographers, statisticians, biologists, and graduate students with an interest in the biological and behavioral control of human fertility.

The main contents are key findings and messages regarding the relationship between contraceptive use and fertility, for 195 countries or areas of the world. These highlights will draw mainly from World Population Prospects 2019, and model-based estimates and projections of family planning indicators 2019. Policy-related implications of and responses to trends in family planning and fertility will be integrated throughout the text. In particular, these issues are of relevance for contextualizing Sustainable Development Goals 3.7.1. and 3.7.2. and the achievement of the 2030 Agenda.

Focuses on substantive problems and summarizes research regarding the determinants of fertility differentials and fertility change in developing countries.