Navigation Links
Why we give: New study finds evidence of generosity among our early human ancestors

A groundbreaking new study examines the origins of holiday giving and finds that our early human ancestors were frequently altruistic.

"Reciprocity is arguably the foundational basis of cooperation in humans," writes Michael Gurven (University of California ?Santa Barbara). "A core feature of reciprocity is the contingent relationship between acts of giving and receiving among social partners. Contingency is important because it sets the rules for who qualifies as a free-rider or cheater in exchange relations."

A rigorous effort to quantify the extent and magnitude of different forms of payback in exchange relationships, the study, forthcoming in the February 2006 issue of Current Anthropology, will be critical for resolving heated debates about the function of altruism among hunter-gatherers.

Strict forms of contingency require tit-for-tat, while more forgiving forms emphasize the work effort or relative contributions of others. Gurven examined food exchanges in two small-scale, non-market societies ?a classic context for understanding the evolution of conditional cooperation in humans.

"Without some kind of payback, altruism can be a very costly endeavor in small-scale societies subsisting on wild foods," Gurven writes. "This study shows that people indeed share more with those who give more to them?[but] families who cannot produce much food, close kin, and nearby neighbors sometimes receive more than they give."


'"/>

Source:University of Chicago Press Journals


Page: 1

Related biology news :

1. Bioartificial kidney under study at MCG
2. W.M. Keck Foundation funds study of friendly microbes
3. Yellowstone microbes fueled by hydrogen, according to U. of Colorado study
4. Genome-wide mouse study yields link to human leukemia
5. Clam embryo study shows pollutant mixture adversely affects nerve cell development
6. New imaging method gives early indication if brain cancer therapy is effective, U-M study shows
7. Same mutation aided evolution in many fish species, Stanford study finds
8. Sequencing of marine bacterium will help study of cell communication
9. Genetically modified rice in China benefits farmers health, study finds
10. A new study examines how shared pathogens affect host populations
11. NYU study reveals how brains immune system fights viral encephalitis
Post Your Comments:
(Date:7/21/2014)... A team of University of California, Riverside Bourns ... placed under the grates of a backyard grill reduces by ... cooking. , The one-eighth inch thick steel carbon plate with ... by cutting a slit into the grill to allow the ... be adopted by grill manufacturers who could sell new grills ...
(Date:7/21/2014)... at the INRS nergie Matriaux Tlcommunications Research Centre ... and temporal resolution greatly exceeding that obtained to ... laser source to shoot a molecular movie of ... article presenting the advancement was recently published in ... , "The approach we developed combines multiphoton ionization ...
(Date:7/21/2014)... meat contributes to climate change, due to greenhouse gasses ... are on the rise and that beef cattle are ... types of animals. It is published by Climactic ... gas when it comes to climate change. It is ... the greatest portion of greenhouse gas totals. But methane ...
Breaking Biology News(10 mins):Catching grease to cut grill pollution 2Climate: Meat turns up the heat 2
... This press release is available in Spanish . ... del Mar) have proven that the absence of the 14-3-3 ... these cells, capacity to activate the signalling of a protein ... activation of NF-kB in tumours was also identified as the ...
... Biochemists at the University of California, Riverside report a new ... twins and even triplets in plant seeds. Daniel ... an associate research biochemist in the Department of Biochemistry ... a naturally occurring enzyme that recycles vitamin C in plants ...
... Calif. The University of California, Riverside is hosting the ... through June 22, 2012. Held this year at the ... oral presentations and 130 poster presentations. Because research papers on ... the rate of more than 2000 per year, the workshop, which ...
Cached Biology News:A new indicator for breast cancer relapse identified 2Link between vitamin C and twins can increase seed production in crops 2Link between vitamin C and twins can increase seed production in crops 315th Vitamin D Workshop begins tomorrow 215th Vitamin D Workshop begins tomorrow 3
(Date:7/21/2014)... 2014 ResearchMoz presents this ... USA Cancer Biomaker Market to 2018 ... ResearchMoz presents this most up-to-date research on Global ... Technologies, Market Analysis, Competitor Profiles, Companion Diagnostic Co-Development, ... GLOBAL & USA ...
(Date:7/20/2014)... fuel gets recycled, the process releases radioactive krypton and ... with the related gas radon. A new porous material ... July 20 in Nature Materials shows how: ... not out. , The CC3 material could be ... nuclear fuel or air in buildings and also in ...
(Date:7/19/2014)... 2014 United States Non-Vascular Stents ... new report, "United States Non-Vascular Stents Market Outlook ... United States Non-Vascular Stents market. The report provides ... units) and average prices (in US dollars) within ... and Metal Biliary Stents (Metal Non-Covered Biliary Stents, ...
(Date:7/18/2014)... 18, 2014  Neogen Corporation (Nasdaq: NEOG ... chief operating officer and president, has resigned, effective July ... a consultant going forward on special projects. His resignation ... in this position since September 2013. On an interim ... Herbert , who has been Neogen,s chief executive officer ...
Breaking Biology Technology:Global & USA Cancer Biomaker Market to 2018 (Identification, Technologies, Market Analysis, Competitor Profiles, Companion Diagnostic Co-Development, Business Strategies, Industry Trends, and Pipeline Analysis) - Market Size, Trends, and Forecasts A 2Global & USA Cancer Biomaker Market to 2018 (Identification, Technologies, Market Analysis, Competitor Profiles, Companion Diagnostic Co-Development, Business Strategies, Industry Trends, and Pipeline Analysis) - Market Size, Trends, and Forecasts A 3Global & USA Cancer Biomaker Market to 2018 (Identification, Technologies, Market Analysis, Competitor Profiles, Companion Diagnostic Co-Development, Business Strategies, Industry Trends, and Pipeline Analysis) - Market Size, Trends, and Forecasts A 4Global & USA Cancer Biomaker Market to 2018 (Identification, Technologies, Market Analysis, Competitor Profiles, Companion Diagnostic Co-Development, Business Strategies, Industry Trends, and Pipeline Analysis) - Market Size, Trends, and Forecasts A 5Global & USA Cancer Biomaker Market to 2018 (Identification, Technologies, Market Analysis, Competitor Profiles, Companion Diagnostic Co-Development, Business Strategies, Industry Trends, and Pipeline Analysis) - Market Size, Trends, and Forecasts A 6A noble gas cage 2A noble gas cage 3United States Non-Vascular Stents Market Outlook to 2020 | Researchmoz 2United States Non-Vascular Stents Market Outlook to 2020 | Researchmoz 3United States Non-Vascular Stents Market Outlook to 2020 | Researchmoz 4
... If you have a creative idea or invention, or you ... want to protect, the first thing you do is contact ... that you have protected your invention, so you're set, right? ... sage advice: look both ways before you cross the street, ...
... a private research center south of Madison, a group ... to talk about the ethical choices presented by biotechnology's ... forum will be the memory of Terri Schiavo. , ... questions surrounding patients such as Schiavo, the brain-damaged Florida ...
... seems like there's always one person in a crowd who ... obituaries. Not me. I'm compulsive about reading the job classifieds. ... to fathom the difference between the ubiquitous "excellent communication skills" ... them a quick scan every day, even if it happens ...
Cached Biology Technology:Five patent tips for start-up companies 2Five patent tips for start-up companies 3Schiavo's death calls attention to ethical issues weighed at Bioethics Forum 2Schiavo's death calls attention to ethical issues weighed at Bioethics Forum 3Is IT leadership a position or an attitude? 2Is IT leadership a position or an attitude? 3
...
Recombinant Rat Leptin, CF...
Adhesive seal-tab, for HybriWell™ hybridization sealing system *set of 400*...
... The CultureWell cell culture systems provide ... cells for staining and imaging. Each ... with standard optical-quality coverslips in cell ... provided sterile and ready to use. ...
Biology Products: