期刊
EXPERIMENTAL GERONTOLOGY
卷 47, 期 10, 页码 807-813出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.exger.2012.05.006
关键词
Intergenerational transfers; Sharing; Life history evolution; Longevity; Tsimane
资金
- National Institutes of Health/National Institutes on Aging [R01AG024119, R56AG024119, P01AG022500]
- National Science Foundation [BCS0136274, BCS0422690]
Humans are the longest living and slowest growing of all primates. Although most primates are social, humans are highly cooperative and social in ways that likely co-evolved with the slow human life history. In this paper we highlight the role of resource transfers and non-material assistance within and across generations in shaping low human mortality rates. The use of complex cooperative strategies to minimize risk is a necessary precursor for selecting further reductions in mortality rate in late adulthood. In conjunction with changes in the age-profile of production, the impacts of resource transfers and other forms of cooperation on reducing mortality likely played an important role in selection on post-reproductive lifespan throughout human evolution. Using medical data and ethnographic interviews, we explore several types of common risks experienced by Tsimane forager-horticulturalists, and quantify the types and targets of aid. Our results illustrate the importance of transfers in several key domains and suggest that the absence of transfers would greatly increase human mortality rates throughout the life course. (C) 2012 Elsevier Inc. All rights reserved.
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