Document Detail

MedLine Citation:
PMID:  10899478     Owner:  NLM     Status:  Publisher    
Intensive food sharing among foragers and horticulturists is commonly explained as a means of reducing the risk of daily shortfalls, ensuring adequate daily consumption for all group members who actively pool resources. Consistently high food producers who give more than they receive, however, gain the least risk-reduction benefit from this daily pooling because they are the least likely to go without food on any given day. Why then do some high producers consistently share food, and why do some average producers share proportionally more food than others? We propose that although these individuals may not receive the same amounts they give (i.e., strict Tit-for-Tat), one explanation for their generosity is that they receive additional food during hard times. These include brief episodes of sickness, disease, injury, or accidents-fairly common events in traditional societies that can render individuals incapable of producing food, thereby having long-term effects on morbidity and fecundity and ultimately on lifetime reproductive success. Data collected among the Ache, a group of South American forager-horticulturists, indicate that those who shared and produced more than average (signaling cooperative intent and/or ability to produce) were rewarded with more food from more people when injured or sick than those who shared and produced below average. These results, framed within the context of tradeoffs between short-term and long-term fitness, may provide insight into motivations behind costly expenditures for establishing and reinforcing status and reputation.
Gurven; Allen-Arave; Hill; Hurtado
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Publication Detail:
Journal Detail:
Title:  Evolution and human behavior : official journal of the Human Behavior and Evolution Society     Volume:  21     ISSN:  1090-5138     ISO Abbreviation:  Evol. Hum. Behav.     Publication Date:  2000 Jul 
Date Detail:
Created Date:  2000-07-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9709475     Medline TA:  Evol Hum Behav     Country:  -    
Other Details:
Languages:  ENG     Pagination:  263-282     Citation Subset:  -    
Department of Anthropology, Human Evolutionary Ecology Program, University of New Mexico, 87131, Albuquerque, NM, USA
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