Christopher X J. Jensen
Associate Professor, Pratt Institute

Do you need cooperation in your model to explain why there are more right-handed people?

Posted 21 Jun 2012 / 0

Interface “A model balancing cooperation and competition can explain our right-handed world and the dominance of left-handed athletes“

A Minor Post, Competition, Cooperation, Evolutionary Modeling, Web

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

Digital organisms yield new insights into the effects of extinction on long-term phylogenetic patterns of evolution

Posted 19 Jun 2012 / 0

PLoS One “A Comparison of the Effects of Random and Selective Mass Extinctions on Erosion of Evolutionary History in Communities of Digital Organisms“

A Minor Post, Community Ecology, Evolutionary Modeling, Extinction

PNAS paper explores the role of population structure in facilitating reciprocity

Posted 12 Jun 2012 / 3

The “Early Edition” of the Proceedings of the National Academy of Sciences of the United States of America just posted online a paper entitled “Direct reciprocity in structured populations“. Authored by Matthijs van Veelen, Julián García, David G. Rand, and Martin A. Nowak, the paper combines two well-explored factors that influence how cooperation evolves: repeated Read More

Articles, Behavior, Cooperation, Evolutionary Modeling, Information Design, Reciprocity, Social Networks

Understanding the effects of asymmetry and relatedness on social volunteerism

Posted 06 Jun 2012 / 0

I am proud to announce the recent publication of a new paper in the Chinese Science Bulletin with collaborators from Yunnan University and the Kunming Institute of Zoology in Kunming, China. Our paper, entitled “Cooperation in an asymmetric volunteer’s dilemma game with relatedness“, uses a game-theoretic analysis of a new variant to the volunteer’s dilemma to Read More

Evolutionary Modeling, Game Theory, Kin Selection, Modeling (General), Mutualism, My publications

Alife XIII conference explores the simulation of artificial life

Posted 14 May 2012 / 0

Alife 13th Annual Conference

A Minor Post, Conferences, Evolutionary Modeling

Martin Nowak and Roger Highfield’s “SuperCooperators”

Posted 03 Nov 2011 / 0

Martin Nowak has accomplished a lot for a mid-career scientist. His theoretical work exploring how cooperation evolves has illuminated the importance of a great number of evolutionary mechanisms. He has also been unafraid to tackle real-life problems of cooperation, including questions like “why do we get cancer?” and “how did language evolve?”. Nowak likes to Read More

Altruism, Books, Cooperation, Cultural Evolution, Ethics, Evolutionary Modeling, Game Theory, Group Selection, History, Human Evolution, Human Nature, Kin Selection, Language Evolution, Multilevel Selection, Mutualism, Punishment, Reciprocity, Religion, Superorganisms, Sustainability

Martin Nowak lecture on The Evolution of Cooperation at MIT

Posted 03 Aug 2011 / 0

I just checked out a lecture given by Martin Nowak at the Massachusetts Institute of Technology that was recently posted on the MIT videos site. The video was recently posted on the MIT site, but it is not entirely clear when it actually happened. I suspect it is the same lecture listed here. Nowak recently Read More

Altruism, Behavior, Behavioral Ecology, Cooperation, Cultural Evolution, Evolutionary Modeling, Game Theory, Group Selection, Human Evolution, Kin Selection, Mathematics, Multilevel Selection, Psychological Adaptation, Radio & Podcasts, Reciprocity, Talks & Seminars, Web

If Only Game Designers Were Scientists

Posted 24 Jul 2011 / 1

Today’s New York Times Magazine featured an article entitled “Where Do Dwarf-Eating Carp Come From?”. The article describes the quirky aspirations of Tarn Adams, the programmer behind the underground computer game called Dwarf Fortress. Like other simulation-based games, Dwarf Fortress allows players to engineer a society (in this case made of dwarves) that faces adversity Read More

Computing, Ecological Modeling, Evolutionary Modeling, Individual-based Models, Modeling (General), Spatially Explicit Modeling, System Stability

Computer-Based Tools for Teaching about Robert Axelrod’s Prisoner’s Dilemma Tournaments

Posted 20 Jan 2011 / 7

In a recent posting I discussed the book The Evolution of Cooperation by Robert Axelrod [1, 2]. The book chronicles Axelrod’s work in the 1980’s to understand the dynamics of the Iterated Prisoner’s Dilemma (IPD), which is perhaps the most well-known of game theory constructs. Axelrod’s work is important because it points out how rich Read More

Cooperation, Easy Iterated Prisoner's Dilemma, Educational Software and Apps, Evolution Education, Evolutionary Modeling, Game Theory, Individual-based Models, Lesson Ideas, Reciprocity, Spatially Explicit Modeling, System Stability, Teaching, Teaching Tools