Christopher X J. Jensen
Associate Professor, Pratt Institute

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

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

Evolutionary Games Infographic Project: First images

Posted 31 Oct 2011 / Comments Off on Evolutionary Games Infographic Project: First images

UPDATE: The images discussed below are now available for free use on the Evolutionary Games Infographic Project page. This post described earlier versions of our “conceptual” evolutionary games infographics for the Prisoner’s Dilemma, Stag Hunt, and Hawk-Dove games. The latest versions of these images are posted here. Below are galleries showing these earlier versions: You can browse Read More

Evolutionary Games Infographics, Game Theory, Information Design, Teaching Tools

Howard Rheingold TED talk urges a global movement to study cooperation

Posted 21 Oct 2011 / 1

A few weeks ago I posted an aside about Howard Rheingold’s 6-week online course on cooperation theory. One of my questions about the course regarded how to assess Rheingold’s credentials to teach the course: he is not sanctioned by any university (although he does call what he does — modestly — “Rheingold U”), and there Read More

Altruism, Cooperation, Cultural Evolution, Evolution, Game Theory, Group Selection, Mutualism, Punishment, Reciprocity, Talks & Seminars, Web

Costly signalling not so costly in the presence of comrades

Posted 23 Sep 2011 / 0

This month’s issue of PLoS Computational Biology contained an interesting article entitled “Signalling and the Evolution of Cooperative Foraging in Dynamic Environments“. Authored by Colin J. Torney, Andrew Berdahl, Iain D. Couzin (all of Princeton University), the article seeks to understand the ecological conditions under which costly signaling can evolve. Many animals emit signals to Read More

Altruism, Articles, Cooperation, Game Theory, Group Selection, Individual-based Models, Modeling (General), Reciprocity, Spatially Explicit Modeling

Rand and Nowak paper on antisocial punishment in public goods games

Posted 19 Aug 2011 / 2

Researchers who study cooperation cannot agree on the role that punishment plays in maintaining the widespread social cooperation observed in nature and human societies. As is true in any scientific discipline, the social experiences of scientists studying cooperation influence their hypotheses. And looking at the societies that we live in, it is easy to see Read More

Altruism, Articles, Cooperation, Game Theory, Punishment

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

Easy-IPD version 1.0 released!

Posted 27 May 2011 / 3

After a full semester of development, including a round of in-classroom testing with real live Pratt undergraduates, I am proud to announce the release of the Easy Iterated Prisoner’s Dilemma (Easy-IPD) interface, a free web-based teaching tool that allows students to experiment with this influential model of behavior. You can check out a slideshow of Read More

Cooperation, Easy Iterated Prisoner's Dilemma, Economics, Evolution Education, Game Theory, Lesson Ideas, Political Science, Reciprocity, Sociology, Teaching Tools

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

“The Evolution of Cooperation” by Robert Axelrod

Posted 10 Jan 2011 / 0

I just finished reading Robert Axelrod’s seminal book entitled The Evolution of Cooperation. Although I had read a lot about Axelrod’s work and am quite familiar with the body of literature that it inspired, I had never actually read his book cover to cover. Going in, my expectation was of finding a rather primitive treatment Read More

Altruism, Behavioral Ecology, Books, Coevolution, Cooperation, Cultural Evolution, Evolution, Evolutionary Modeling, Game Theory, Human Evolution, Individual-based Models, Interdisciplinarity, Multilevel Selection, Mutualism, Political Science, Public Policy, Reciprocity, Sociology, Spatially Explicit Modeling