Navigation Links
Penn biologists show that generosity leads to evolutionary success
Date:9/2/2013

With new insights into the classical game theory match-up known as the "Prisoner's Dilemma," University of Pennsylvania biologists offer a mathematically based explanation for why cooperation and generosity have evolved in nature.

Their work builds upon the seminal findings of economist John Nash, who advanced the field of game theory in the 1950s, as well as those of computational biologist William Press and physicist-mathematician Freeman Dyson, who last year identified a new class of strategies for succeeding in the Prisoner's Dilemma.

Postdoctoral researcher Alexander J. Stewart and associate professor Joshua B. Plotkin, both of Penn's Department of Biology in the School of Arts and Sciences, examined the outcome of the Prisoner's Dilemma as played repeatedly by a large, evolving population of players. While other researchers have previously suggested that cooperative strategies can be successful in such a scenario, Stewart and Plotkin offer mathematical proof that the only strategies that succeed in the long term are generous ones. They report their findings in PNAS the week of Sept. 2.

"Ever since Darwin," Plotkin said, "biologists have been puzzled about why there is so much apparent cooperation, and even flat-out generosity and altruism, in nature. The literature on game theory has worked to explain why generosity arises. Our paper provides such an explanation for why we see so much generosity in front of us."

The Prisoner's Dilemma is a way of studying how individuals choose whether or not to cooperate. In the game, if both players cooperate, they both receive a payoff. If one cooperates and the other does not, the cooperating player receives the smallest possible payoff, and the defecting player the largest. If both players do not cooperate, they receive a payoff, but it is less than what they would gain if both had cooperated. In other words, it pays to cooperate, but it can pay even more to be selfish.

I
'/>"/>

Contact: Katherine Unger Baillie
kbaillie@upenn.edu
215-898-9194
University of Pennsylvania
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. OU microbiologists elected as fellows in the American Academy of Microbiology
2. Cell biologists say immigration reform critical to scientific education and competitiveness
3. Saint Louis University, University of Toronto biologists help decode turtle genome
4. Cancer biologists find DNA-damaging toxins in common plant-based foods
5. Cryptic clams: U-M biologists find species hiding in plain view
6. Some biologists shun new media
7. Biologists produce rainbow-colored algae
8. Biologists explore link between amphibian behavior and deadly disease
9. Biologists lead international team to track Arctic response to climate change
10. Biologists map rare case of fitness-reducing interaction in nuclear, mitochondrial DNA
11. Campus as laboratory: U-M student biologists use Diag trees to help solve gypsy moth mystery
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/20/2014)... University of Tennessee, Knoxville, research finds life can persist ... professor was part of a team that examined waters ... Antarctic ice sheet and found the extreme environment supports ... by Jill Mikucki and her colleagues has implications for ... in the solar system. The findings are published in ...
(Date:8/20/2014)... MA Using population-based screening outcomes of approximately 3 ... including four researchers at the University of Massachusetts Medical ... immunodeficiency (SCID) can be successfully implemented across public health ... published in the Aug. 20 issue of the ... ) showed the rate of SCID in newborns is ...
(Date:8/20/2014)... Ore. -- When are athletes who have suffered concussions ... Oregon study has found that high school athletes who ... 60 days experience a significant regression in their abilities ... The regression, as seen in changes in their balance ... 19 athletes. Ten of the 12 had returned to ...
Breaking Biology News(10 mins):University of Tennessee research uncovers subglacial life beneath Antarctic ice sheet 2Newborn screening expansion offers early diagnosis and treatment to infants with SCID 2Newborn screening expansion offers early diagnosis and treatment to infants with SCID 3Recovery reversal seen in Oregon study of returning concussed athletes 2Recovery reversal seen in Oregon study of returning concussed athletes 3
... bioMETRX, Inc., (OTC,Bulletin Board: BMRX), the leading ... that Frank Santamorena, a world,renowned security expert, ... October 21, 2008., Frank Santamorena brings ... level,security expertise. Frank is a consultant to ...
... A UC Davis researcher known for her honey ... with their Old World counterparts to enhance their positive ... and very productive, and hopefully will confer increased resistance ... Susan Cobey. The Carniolan honey bee ( Apis ...
... From stiff plastic limbs and metal rods to complex ... test dummies of yesteryear are evolving and researchers at Wake ... to life. This new generation of human body ... known in research "dummies" before. The models will contain detailed ...
Cached Biology News:bioMETRX, Inc. Welcomes Residential and Commercial Security Expert to Board of Directors 2bioMETRX, Inc. Welcomes Residential and Commercial Security Expert to Board of Directors 3Building a better bee 2Wake Forest plays integral role in effort to revolutionize vehicle safety 2Wake Forest plays integral role in effort to revolutionize vehicle safety 3
(Date:8/21/2014)... , Aug. 21, 2014 OTC ... Pharmaceuticals Inc., a biotechnology company, on its approval ... previously traded on OTCQX®, the best marketplace for ... Markets Group. Logo - http://photos.prnewswire.com/prnh/20110118/MM31963LOGO ... the successful execution of its growth strategy and ...
(Date:8/21/2014)... 21, 2014 Ontotext S4 , ... Ontotext . Now the same enterprise hardened ... structured and unstructured data is available to start-ups and ... enterprise technology. Organizations that do not have resources to ... can use S4 since there is no need for ...
(Date:8/20/2014)... Clintrax Global, Inc., a worldwide provider ... Raleigh, NC , recently announced the addition ... of Administration. As Vice President ... including their alignment with company objectives and policies.  ... an HR executive, specializing in needs assessments, customer ...
(Date:8/20/2014)... , Aug. 20, 2014 Neurotrope, ... host a conference call to provide an update ... p.m. Eastern daylight timeDial-in numbers:(888) 505-4369 (U.S. and ... Live web cast: www.neurotropebioscience.com , under "Investor Relations"The ... after completion through September 2, 2014 at (888) ...
Breaking Biology Technology:OTC Markets Group Congratulates Immune Pharmaceuticals on NASDAQ Listing 2Ontotext Releases Text Mining & Semantic Technology Running in the Cloud – Welcome to “S4? 2Ontotext Releases Text Mining & Semantic Technology Running in the Cloud – Welcome to “S4? 3Ontotext Releases Text Mining & Semantic Technology Running in the Cloud – Welcome to “S4? 4Clintrax Global, Inc. Announces Addition to Executive Team 2Neurotrope To Host Conference Call 2
... , ... , , , ... samples of low cell numbers , , , ... cells have, for example,limited availability, quantity,and lifespan. Using the Agilent,2100 bioanalyzer ...
... , , , ... , , , , ... Agilent 2100 bioanalyzer can,be used to analyze apoptotic cell samples. Performance ... compared to,those obtained with a conventional flow cytometer. Histogram quality,of the ...
... , , , , ... The In Situ Cell Death Detection Kit has been designed as a precise, fast, and simple, ... the single-cell level in tissues. It is based on the so-called TUNEL, ... , , , , ...
Cached Biology Technology:Flow cytometric analysis of human,primary cells using the Agilent 2100,bioanalyzer and on-chip staining 2Flow cytometric analysis of human,primary cells using the Agilent 2100,bioanalyzer and on-chip staining 3Apoptosis detection by annexin V and,active caspase-3 with the Agilent 2100,bioanalyzer 2Apoptosis detection by annexin V and,active caspase-3 with the Agilent 2100,bioanalyzer 3Apoptosis detection by annexin V and,active caspase-3 with the Agilent 2100,bioanalyzer 4Apoptosis detection by annexin V and,active caspase-3 with the Agilent 2100,bioanalyzer 5Apoptosis detection by annexin V and,active caspase-3 with the Agilent 2100,bioanalyzer 6Apoptosis detection by annexin V and,active caspase-3 with the Agilent 2100,bioanalyzer 7Apoptosis detection by annexin V and,active caspase-3 with the Agilent 2100,bioanalyzer 8Apoptosis detection by annexin V and,active caspase-3 with the Agilent 2100,bioanalyzer 9In Situ Cell Death Detection Kit 2
Rabbit polyclonal to Phosphothreonine-Proline / Phosphoserine-Proline ( Abpromise for all tested applications)....
Mouse monoclonal [7C6] to Bcr-abl ( Abpromise for all tested applications). SwissProtID: P11274...
Chicken polyclonal to Thioredoxin domain containing 9 ( Abpromise for all tested applications). Antigen: Full length protein (Human) Entrez Gene ID: 10190 Swiss Protein ID: O14530...
Mouse anti-IkBa/MAD-3 Class: Antibody Product Group: Signalling molecules and phospho-specific Antibody...
Biology Products: