Christopher X J. Jensen
Associate Professor, Pratt Institute

Mount Everest and the limits of play

Posted 17 Jul 2012 / 2

Photo: http://commons.wikimedia.org/wiki/File:Panoramique_mont_Everest.jpg The traditional spring climbing season has come to an end in the Himalaya and 2012 has turned out to be a pretty deadly year. On Mount Everest — the most storied and trafficked Himalayan peak — ten people have died this season. Only the years 1996 and 2006 have seen more deaths. While Read More

A Major Post, Cultural Evolution, Evolutionary Psychology, Human limits, Memetic Fitness, Mismatch theory, Play, Survival

If your loners are truly loners they won’t punish, and cooperation thrives even in the presence of antisocial punishment

Posted 28 Jun 2012 / 1

Last summer I discussed a paper by Rand and Nowak that explored the dynamics of antisocial punishment in groups composed of cooperators, defectors, and loners playing a public goods game. In a conventional public goods game, at least some players must make a contribution in order to reap group reward. Cooperators make that contribution and Read More

A Major Post, Altruism, Articles, Cooperation, Evolutionary Modeling, Game Theory, Punishment

Perhaps nestedness is just an artifact of ecological opportunity (and not stability)

Posted 27 Jun 2012 / 0

One of my chief interests is stability: I am curious about what allows for the persistence of genes, individuals, groups, species, and communities. This is a broad question and it may not have single, simple answer, but it is exciting to think that there may be ‘rules of stability’ in nature that might help us Read More

A Major Post, Articles, Coevolution, Ecological Modeling, Interactions, Mutualism, Mutualistic Networks, Pollination, System Stability

Steven Pinker makes it clear that he is not a “group selectionist”

Posted 26 Jun 2012 / 5

Frequently I feel like I am listening to an early 2000’s George W. Bush speech when the ‘opponents of group selection’ step up to the podium. Seemingly, you are either “with us or against us” when it comes to considering selection acting at a level above the individual. As someone who is open to thinking Read More

A Major Post, Adaptation, Coevolution, Cultural Evolution, Group Selection, Kin Selection, Memetic Fitness, Multilevel Selection, Natural Selection, Punishment, Web

Are the population dynamics of Dupont’s lark dictated by multilevel selective pressures?

Posted 25 Jun 2012 / 0

A fascinating new paper published this week in the journal PLoS One demonstrates how selection acting at least three different levels produces distinct selective pressures that shape the song behavior of male Dupont’s lark (Chersophilus duponti) in the Ebro Valley of northwestern Spain. Authored by Paola Laiolo and José Ramón Obeso and entitled “Multilevel Selection Read More

A Major Post, Articles, Behavior, Competition, Group Selection, Multilevel Selection, Population Growth

Understanding the role of the Templeton Foundation in funding evolutionary biology research

Posted 22 Jun 2012 / 0

Back in March, David Barash used his regular column in the Chronicle of Higher Education to unveil “The Truth about the Temple of Templeton“. Reacting to an increasingly-large funding stream coming out of the Templeton Foundation, Barash questions whether receiving money from this religiously-affiliated, pro-business group will lead to tainted science. Barash begins his critique by Read More

A Major Post, Articles, Cooperation, Cultural Evolution, Economics, Evolution, Grants & Funding, Group Selection, Human Evolution, Human Nature, Religion

Scientific American “Why We Help”

Posted 21 Jun 2012 / 1

The July issue of Scientific American features a cover story written by Martin A. Nowak called “Why We Help“. This very short article contains a brief review of Nowak’s “five rules” for cooperation, a little bit of connection to experimental work in real organisms, and some hazy conjecture concerning what makes humans cooperate. It seems as Read More

A Major Post, Anthropogenic Change, Articles, Behavior, Climate Change, Cooperation, Evolution, Evolutionary Modeling, Game Theory, Group Selection, Human Evolution, Human Nature, Kin Selection, Punishment, Reciprocity, Social Networks

“Creatures of Light: Nature’s Bioluminescence” exhibit at the American Museum on Natural History

Posted 19 Jun 2012 / 0

Today I had the pleasure of accompanying my daughter’s fourth grade class to the “Creatures of Light: Nature’s Bioluminescence” exhibit at the American Museum of Natural History. Beyond making sure that all students returned home safely, I was also interested in how this exhibit explained bioluminescence as an evolved adaptation. When I teach Evolution, one Read More

A Major Post, Adaptation, Behavior, Coevolution, Competition, Convergence, Cooperation, Evolution, Interactions, Marine Ecosystems, Museum design, Museums & Zoos, Mutualism, Phylogenetics, Predation, Sex and Reproduction, Terrestrial

Evolutionary Games Infographic Project: First “examples” matrices

Posted 21 Nov 2011 / 1

UPDATE: The images discussed below are now available for free use on the Evolutionary Games Infographic Project page. To complement the “conceptual” images we created to depict the Prisoner’s Dilemma, Hawk-Dove, and Stag Hunt games, Greg Riestenberg and I have been developing a series of “example” images showing how the payoffs of these games are produced Read More

A Major Post, Evolutionary Games Infographics, Game Theory, Information Design

Evolution 2010 (Overall Impressions)

Posted 30 Jun 2010 / 0

The verdant base of the Multnomah Falls I really enjoyed Evolution 2010. It was a very well-organized conference that came off without any hitches. Having been involved in the execution of Evolution 2006 at Stony Brook University, I understand how much work goes into making these meetings happen. Portland State University deserves much credit for Read More

A Major Post, Conferences, Evolution, Society for the Study of Evolution