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Trends toward later and less marriage and childbearing have been even more pronounced in East Asia than in the West. At the same time, many other features of East Asian families have changed very little. We review recent research on trends in a wide range of family behaviors in China, Japan, Korea, and Taiwan. We also draw upon a range of theoretical frameworks to argue that trends in marriage and fertility reflect tension between rapid social and economic changes and limited change in family expectations and obligations. We discuss how this tension may be contributing to growing socioeconomic differences in patterns of family formation. This focus on East Asia extends research on the second demographic transition in the West by describing how rapid decline in marriage and fertility rates can occur in the absence of major changes in family attitudes or rising individualism.

References to the second demographic transition (SDT) have increased dramatically in the past two decades. The SDT predicts unilinear change toward very low fertility and a diversity of union and family types. The primary driver of these changes is a powerful, inevitable, and irreversible shift in attitudes and norms in the direction of greater individual freedom and self-actualization. First, we describe the origin of this framework and its evolution over time. Second, we review the empirical fit of the framework to major changes in demographic and family behavior in the United States, the West, and beyond. As has been the case for other unilinear, developmental theories of demographic or family change, the SDT failed to predict many contemporary patterns of change and difference. Finally, we review previous critiques and identify fundamental weaknesses of this perspective, and we provide brief comparisons to selected alternative approaches.

The article considers the evolution of two “Second Demographic Tradition” (SDT) core characteristics: fertility postponement and the rise of cohabitation, with particular attention being given to the first two decades of the new century. It can be considered as the sequel to the concise overview of the SDT published earlier in the US Proceedings of the National Academy (PNAS) (Lesthaeghe, 2014 ). In the first section, three optimistic views concerning the evolution of fertility are considered: (i) rises due to the end of postponement, (ii) rises connected with advancing human development and (iii) rises associated with advancing gender equality. The focus in this section is mainly but not exclusively on the European experience and its large degree of variation in fertility patterns. It is argued that these three optimistic predictions of sustained fertility rises are mainly based on observations prior to 2010, with too much weight being given to four Nordic countries and too little to other Western European countries with very similar fertility levels. However, these expectations have been thwarted during the second decade, even in the presence of advances in human development and/or gender equality. Hence, the original SDT prediction of 1986 of sustained sub - replacement fertility still holds after 35 years. We expect this to continue during the third decade as well. Furthermore, single-factor explanations are not likely to do justice to far more intricate situations that are responsive to varying structural and ideational influences. In the second section, the evolution of cohabitation is traced in Europe, the USA and Canada, the Latin American countries, three East Asian populations and selected sub-Saharan cases. At the onset, cohabitation can start either from a SDT basis among the better educated or among the poorer classes following a pattern of disadvantage (POD). It is argued that the feature of cohabitation spreads rapidly among all social classes and across all education groups and that in the process of increasing cohabitation, the POD versus SDT argument loses its significance. On a global scale, the rise in cohabitation is contingent on two dimensions: (i) contrasting historical patterns of kinship organisation, including the position of women, and (ii) further advances of the “ethics revolution”, indicating the growing dominance of individual autonomy over traditional societal norms. As a result, no breakthroughs in the near future are expected in countries with a Muslim or Hindu tradition in which no such major cultural shifts have occurred so far.

This article gives a concise overview of the theoretical development of the concept of the “second demographic transition” since it was coined in 1986, its components, and its applicability, first to European populations and subsequently also to non-European societies as well. Both the demographic and the societal contrasts between the first demographic transition (FDT) and the second demographic transition (SDT) are highlighted. Then, the major criticisms of the SDT theory are outlined, and these issues are discussed in the light of the most recent developments in Europe, the United States, the Far East, and Latin America. It turns out that three major SDT patterns have developed and that these evolutions are contingent on much older systems of kinship and family organization. Significance At the end of the historical declines in both mortality and fertility (the “first demographic transition”), new demographic phenomena developed in the Western World. Therefore, new theoretical frameworks were needed to explain features such as the baby bust, the systematic postponement of marriage and parenthood, subreplacement fertility, the rise of alternative forms of partnerships, and parenthood outside marriage. The “second demographic transition” (SDT) theory is such an attempt. Although it accepts the major tenets of bounded rational economic choice, it also allows for autonomous preference drift by relying on Maslow’s theory of shifting needs. As such, an essentially cultural component is being added.

This article presents a narrative of the unfolding of the Second Demographic Transition (SDT) since the theory was first formulated in 1986. The first part recapitulates the foundations of the theory, and documents the spread of the SDT to the point that it now covers most European populations. Also for Europe, it focuses on the relationship between the SDT and the growing heterogeneity in period fertility levels. It is shown that the current positive relationship between SDT and TFR levels is not a violation of the SDT theory, but the outcome of a \"split correlation\" with different sub-narratives concerning the onset of fertility postponement and the degree of subsequent recuperation in two parts of Europe. The second part of the article addresses the issue of whether the SDT has spread or is currently spreading in industrialized Asian countries. Evidence gathered for Japan, South Korea, Hong Kong, Singapore, and Taiwan is presented. That evidence pertains to both the macro-level (national trends in postponement of marriage and parenthood, rise of cohabitation) and the micro-level (connections between individual values orientations and postponement of parenthood). Strong similarities are found with SDT patterns in Southern Europe, except for the fact that parenthood is still very rare among Asian cohabiting partners.

This paper investigates the hypothesis that the casual effect of life expectancy on income per captia growth is non-monotic. This hypothesis follows from the recent literature on unified growth, in which the demographic transition represents an important turning point for population dynamics and hence plays a central role for the transition from stagenation to growth. Results from different empirical specifications and identification strategies document that the effect is non-monotonic, negative (but often insignificant) before the onset of the demographic transition, but strongly positive after its onset. The results provide a new interpretation of the contradictory existing evidence and have relevant policy implications.

This chapter review the evidence that humans receive important help from other individuals in raising children, by drawing together empirical evidence that the availability of family members affects child health and wellbeing and female fertility rates. In the first section we will concentrate on the evidence for the effects of kin on child well-being in pre-demographic transition societies. In the second section we will tackle the effects of kin on children in post-transition societies. Finally, in the third section we will present evidence that kin may affect fertility rates. Adapted from the source document.

Using recent, nationally representative data, we examine the prevalence and social determinants of premarital cohabitation, an important sign of the Second Demographic Transition (SDT) in China. Descriptive results show that although only about 7 percent of Chinese adults born before 1980 cohabited before first marriage, cohabitation has grown sharply among recent birth cohorts. Based on the theoretical perspectives of \"ideational change\" and \"economic development,\" we conduct multivariate analyses of social determinants of cohabitation that may reveal potential mechanisms of its diffusion. We find that greater exposure to Western culture, higher educational attainment for men, and more advantaged family background were all positively related to premarital cohabitation. Our results also show the influence of a unique social institution in China, with Communist Party members less likely than their counterparts to cohabit before first marriage. Broadly speaking, the positive association between economic development and local rates of premarital cohabitation suggests the transformative influence of modernization on family systems.

Kidney disease has been described as the most neglected chronic disease. Reliable estimates of the global burden of kidney disease require more population-based studies, but specific risks occur across the socioeconomic spectrum from poverty to affluence, from malnutrition to obesity, in agrarian to post-industrial settings, and along the life course from newborns to older people. A range of communicable and noncommunicable diseases result in renal complications and many people who have kidney disease lack access to care. The causes, consequences and costs of kidney diseases have implications for public health policy in all countries. The risks of kidney disease are also influenced by ethnicity, gender, location and lifestyle.  Increasing economic and health disparities, migration, demographic transition, unsafe working conditions and environmental threats, natural disasters and pollution may thwart attempts to reduce the morbidity and mortality from kidney disease. A multisectoral approach is needed to tackle the global burden of kidney disease. The sustainable development goals (SDGs) emphasize the importance of a multisectoral approach to health. We map the actions towards achieving all of the SDGs that have the potential to improve understanding, measurement, prevention and treatment of kidney disease in all age groups. These actions can also foster treatment innovations and reduce the burden of such disease in future generations.

BACKGROUND During the last decades, nonmarital cohabitation has diffused throughout the industrialised world, although not uniformly. The Second Demographic Transition (SDT) predicts a convergence of cohabitation patterns towards a final stage in which cohabitation and marriage will be almost indistinguishable. OBJECTIVE This paper contributes to the literature on the convergence of cohabitation patterns across countries by testing whether countries are becoming more similar over time, as suggested by the SDT. METHODS We use sequence analysis and cluster analysis techniques to classify different patterns of cohabitation in France, Italy, Norway, Bulgaria, and the United States. Using data mainly stemming from the Gender and Generations Surveys (GGS), we analyse women's patterns of behaviour during the five years following the start of their first cohabitation, over a time span of three decades (1970s-2000s). RESULTS On the basis of sequencing the events of childbirth, marriage, and separation we are able to identify five different clusters corresponding to different ways of going through the cohabitation experience. CONCLUSIONS Our results suggest that there is a general decreasing trend of cohabitation as a premarital experience and an increasing trend of cohabitation as an alternative to marriage or as a free union. However, within this homogeneous trend, persistent peculiarities at the country level suggest that the selected countries are not simply at different stages of the same trajectory. CONTRIBUTION The classification that emerges from the data-driven approach combines several features of already existing typologies of cohabitation experience. Analysis of the data highlights country peculiarities in the development of the cohabitation experience, rather than the existence of a common path as predicted by the SDT.