Evolution, Fertility and the Ageing Population
We propose that the recent rise in the fertility rate in developed countries is the beginning of a broad-based increase in fertility towards above-replacement levels. Environmental shocks that reduced fertility over the past 200 years changed the composition of fertility-related traits in the population and temporarily raised fertility heritability. As those with higher fertility are selected for, the “high-fertility” genotypes are expected to come to dominate the population, causing the fertility rate to return to its pre-shock level. We show that even with relatively low levels of genetically based variation in fertility, there can be a rapid return to a high-fertility state, with recovery to above-replacement levels usually occurring within a few generations. In the longer term, this implies that the proportion of elderly in the population will be lower than projected, reducing the fiscal burden of ageing on developed world governments. However, the rise in the fertility rate increases the population size and proportion of dependent young, presenting other fiscal and policy challenges.
|Date of creation:||2013|
|Date of revision:|
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- Galor, Oded & Moav, Omer, 2000.
"Natural Selection and the Origin of Economic Growth,"
2000:5, Institute for Futures Studies.
- Oded Galor & Omer Moav, 2002. "Natural Selection and the Origin of Economic Growth," The Quarterly Journal of Economics, Oxford University Press, vol. 117(4), pages 1133-1191.
- Galor, Oded & Moav, Omer, 2001. "Natural Selection and the Origin of Economic Growth," CEPR Discussion Papers 2727, C.E.P.R. Discussion Papers.
- Oded Galor & Omer Moav, 2000. "Natural Selection and the Origin of economic Growth," Working Papers 2000-18, Brown University, Department of Economics.
- Gregory Clark & Neil Cummins, 2010.
"Malthus to Modernity: England’s First Fertility Transition, 1760-1800,"
1013, University of California, Davis, Department of Economics.
- Clark, Gregory & Cummins, Neil, 2010. "Malthus to Modernity: England’s First Fertility Transition, 1760-1800," MPRA Paper 25465, University Library of Munich, Germany.
- Kevin Milligan, 2002.
"Subsidizing the Stork: New Evidence on Tax Incentives and Fertility,"
NBER Working Papers
8845, National Bureau of Economic Research, Inc.
- Kevin Milligan, 2005. "Subsidizing the Stork: New Evidence on Tax Incentives and Fertility," The Review of Economics and Statistics, MIT Press, vol. 87(3), pages 539-555, August.
- Galor, Oded & Weil, David, 1995.
"The Gender Gap, Fertility and Growth,"
CEPR Discussion Papers
1157, C.E.P.R. Discussion Papers.
- Gregory Clark, 2007.
"Introduction to A Farewell to Alms: A Brief Economic History of the World
[A Farewell to Alms: A Brief Economic History of the World]," Introductory Chapters, Princeton University Press.
- Caroline Foster, 2000. "The Limits to Low Fertility: A Biosocial Approach," Population and Development Review, The Population Council, Inc., vol. 26(2), pages 209-234.
- Rafael Lalive & Josef Zweimüller, 2009. "How Does Parental Leave Affect Fertility and Return to Work? Evidence from Two Natural Experiments," The Quarterly Journal of Economics, Oxford University Press, vol. 124(3), pages 1363-1402.
- David N. Weil & Oded Galor, 2000. "Population, Technology, and Growth: From Malthusian Stagnation to the Demographic Transition and Beyond," American Economic Review, American Economic Association, vol. 90(4), pages 806-828, September.
- Hans-Peter Kohler & Joseph L. Rodgers & Kaare Christensen, 1999. "Is Fertility Behavior in Our Genes? Findings from a Danish Twin Study," Population and Development Review, The Population Council, Inc., vol. 25(2), pages 253-288.
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