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Decline of cash assistance and child well-being, Luke Shaefer

The evolution of transfers and life histories

Publication Abstract

Lee, Ron, and C. Y. Cyrus Chu. 2012. "The evolution of transfers and life histories." Experimental Gerontology, 47(10): 803-806.

Much of life history theory analyzes life histories of independent, isolated individuals, who grow, forage, reproduce, and die. However, in many species social interactions such as food sharing are a key part of the life history strategy, altering the energetic budget constraint. Transfers and sharing raise reproductive success and also alter the fitness impact of other aspects of the life history. We discuss a variety of traits and behaviors for which transfers are important, synthesizing results from a number of earlier papers. Topics include the U-shaped mortality curve, post reproductive survival, causes of early life mortality decline, why intergenerational transfers evolve and co-evolve with longevity, time preference, sexual dimorphism and sexual differences in transfers, menopause, demographic advantages of social sharing, and consequences of social sharing for life history evolution. (C) 2012 Elsevier Inc. All rights reserved.

DOI:10.1016/j.exger.2012.06.004 (Full Text)

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