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| Second Demographic Transition | |
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| Name | Second Demographic Transition |
Second Demographic Transition
The Second Demographic Transition is a demographic theory describing post‑1960s shifts in family formation, fertility, and household behavior across contemporary populations. Developed in European demography and sociology debates, the concept links changing patterns of marriage, birth, and partnership with broader social transformations in late‑20th and early‑21st century societies. Proponents connect empirical trends to cultural, institutional, and economic changes observable across multiple countries and regions.
The term emerged from work by demographers associated with United Nations Population Fund, Population Council, Max Planck Institute for Demographic Research, Princeton University scholars, and European research networks in the 1980s and 1990s, drawing on earlier studies by John Bongaarts, Ansley Coale, Ron Lesthaeghe, Jacqueline Mackenbach, and colleagues. Early debates involved comparative datasets from Human Fertility Database, Eurostat, United Nations, and national statistical offices such as Institut National d'Études Démographiques and Office for National Statistics. Influential conferences at European Society of Population Economics, International Union for the Scientific Study of Population, and workshops at Paris Descartes University and University of Oxford framed the emerging paradigm.
The framework synthesizes ideas from demographic transition theory as articulated in works linked to Théodore Monod, Warren Thompson, and later syntheses by David Coleman and Richard Easterlin. Core concepts include sustained low fertility, postponement of marriage linked to cohorts studied by Ester Boserup and Carole Pateman, increased cohabitation patterns observed in research by Susan Watkins and Maya Khemlani David, and rising rates of nonmarital childbearing analyzed by Sara McLanahan and Jennifer Glass. The theory invokes ideational change theories promoted by Ronald Inglehart, institutionalist perspectives advanced by Theda Skocpol, and life‑course approaches from Elder Jr. and Gøsta Esping‑Andersen to explain linkage among values, labor markets such as those studied by OECD, and welfare state provisions like those compared by Esping‑Andersen.
Empirical work draws on longitudinal panels including British Household Panel Survey, German Socio‑Economic Panel, Panel Study of Income Dynamics, and cross‑national sources like World Values Survey and European Social Survey. Observed patterns include sustained subreplacement fertility documented in Japan, Italy, Spain, and parts of Germany; rising age at first birth in Sweden, France, and Norway; and expansion of single‑person households in United Kingdom, United States, and Netherlands. Studies by teams at University of Groningen, University of Vienna, and Columbia University have traced cohort effects, period effects, and tempo distortions identified by Bongaarts and Evertsson.
Scholars attribute drivers to ideational shifts associated with modernization theorists such as Max Weber and postmaterialist scholars like Ronald Inglehart, economic restructurings tracked by International Monetary Fund and World Bank, and policy regimes compared by Gøsta Esping‑Andersen. Labor market participation of women emphasized by Amartya Sen and Christina Hoff Sommers, diffusion of contraception technologies linked to research at Population Council and Guttmacher Institute, and legal changes including reforms in Sweden and Netherlands have been invoked. Globalization effects analyzed by Saskia Sassen and migration dynamics studied by Douglas Massey further interact with educational expansion chronicled by OECD and welfare redesigns examined by Margaret Levi.
Consequences span demographic, economic, and political realms explored in work by Joseph Stiglitz, Nancy Folbre, and Pippa Norris. Low fertility and population ageing documented in projections by United Nations and European Commission affect dependency ratios studied at International Monetary Fund and pension sustainability research at World Bank. Shifts in family forms influence child outcomes researched by James Heckman and Sara McLanahan, housing demand patterns in studies at Harvard University and Massachusetts Institute of Technology, and electoral behavior connected to generational analyses by Pierre Bourdieu and Ronald Inglehart.
Regional studies compare Western Europe (e.g., France, Sweden, Germany), Southern Europe (e.g., Italy, Spain', Greece), East Asia (e.g., Japan, South Korea, Taiwan), and North America (e.g., United States, Canada). Case studies by researchers at University of Oxford, University of Cambridge, Seoul National University, and National Taiwan University reveal divergent trajectories influenced by policy mixes in France and Sweden, cultural familism in Italy and Spain, and labor market constraints in Japan and South Korea. Comparative work incorporates data from Eurostat, Asian Development Bank, and national censuses such as Statistics Korea and Istat.
Critiques from scholars including Mancur Olson, John Goldthorpe, Philip Cohen, and Alain Deacon challenge universality claims, emphasize methodological issues raised by Kenneth Wachter, and propose alternatives rooted in economic constraints, migration effects analyzed by Stephen Castles, and policy feedbacks studied by Paul Pierson. Other alternatives highlight tempo artifacts noted by Bongaarts and argue for greater attention to inequality and class analyses promoted by Pierre Bourdieu and Hyman Minsky. Ongoing debates engage demographers at Princeton University, sociologists at London School of Economics, and policy analysts at Brookings Institution.