The case for negative senescence
AbstractNegative senescence is characterized by a decline in mortality with age after reproductive maturity, generally accompanied by an increase in fecundity. Hamilton (1966) ruled out negative senescence: we adumbrate the deficiencies of his model. We review empirical studies of various plants and some kinds of animals that may experience negative senescence and conclude that negative senescence may be widespread, especially in indeterminate-growth species for which size and fertility increase with age. We develop optimization models of life-history strategies that demonstrate that negative senescence is theoretically possible. More generally, our models contribute to understanding of the evolutionary and demographic forces that mold the agetrajectories of mortality, fertility and growth.
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Bibliographic InfoPaper provided by Max Planck Institute for Demographic Research, Rostock, Germany in its series MPIDR Working Papers with number WP-2004-002.
Length: 28 pages
Date of creation: Jan 2004
Date of revision:
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Web page: http://www.demogr.mpg.de/
Find related papers by JEL classification:
- J1 - Labor and Demographic Economics - - Demographic Economics
- Z0 - Other Special Topics - - General
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- Léonard,Daniel & Long,Ngo van, 1992.
"Optimal Control Theory and Static Optimization in Economics,"
Cambridge University Press, number 9780521337465, October.
- Léonard,Daniel & Long,Ngo van, 1992. "Optimal Control Theory and Static Optimization in Economics," Cambridge Books, Cambridge University Press, number 9780521331586, October.
- C.Y. Cyrus Chu & Hung-Ken Chien & Ronald D. Lee, 2008.
"The Evolutionary Theory of Time Preferences and Intergenerational Transfers,"
NBER Working Papers
14185, National Bureau of Economic Research, Inc.
- Cyrus Chu, C.Y. & Chien, Hung-Ken & Lee, Ronald D., 2010. "The evolutionary theory of time preferences and intergenerational transfers," Journal of Economic Behavior & Organization, Elsevier, vol. 76(3), pages 451-464, December.
- James W. Vaupel & Zhen Zhang, 2012. "The difference between alternative averages," Demographic Research, Max Planck Institute for Demographic Research, Rostock, Germany, vol. 27(15), pages 419-428, September.
- Annette Baudisch, 2009. "How ageing is shaped by trade-offs," MPIDR Working Papers WP-2009-043, Max Planck Institute for Demographic Research, Rostock, Germany.
- Annette Baudisch & James W. Vaupel, 2009. "Senescence vs. sustenance: evolutionary-demographic models of aging," MPIDR Working Papers WP-2009-040, Max Planck Institute for Demographic Research, Rostock, Germany.
- Maria G. Perozek, 2005. "Using subjective expectations to forecast longevity: do survey respondents know something we don't know?," Finance and Economics Discussion Series 2005-68, Board of Governors of the Federal Reserve System (U.S.).
- James R. Carey, 2008. "Biodemography: Research prospects and directions," Demographic Research, Max Planck Institute for Demographic Research, Rostock, Germany, vol. 19(50), pages 1749-1758, September.
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