Christopher X J. Jensen
Associate Professor, Pratt Institute

Arming the Donkeys on kids, parenting, and Burning Man

Posted 12 Sep 2016 / 0

Whenever I have a really mind-numbing task that I need to do, I turn to podcasts to save me from the tedium. One of my favorite respites is Dan Ariely‘s Arming the Donkeys podcast. Today I checked out a couple of great episodes for the parents out there. Just released a few days ago is an Read More

A Minor Post, Behavior, Development, Empathy, Game Theory, Human Evolution, Play, Public Outreach, Radio & Podcasts, Reputation, Social Norms

How much impact can a set of free game theory infographics have?

Posted 02 Dec 2015 / 0

A few years ago, I worked with graphic designer Greg Riestenberg to come up with a series of infographic images designed to make several foundational game theory constructs easier to understand. Our approach was to take all the numbers out of the representations, using information design to highlight how the games work and how they differ from each Read More

A Major Post, Evolution Education, Evolutionary Games Infographics, Game Theory, Information Design, Teaching Tools

Like-with-like assortment plus exponential fitness increases cooperation, even under weak selection

Posted 06 Oct 2015 / 0

arXiv “Assortment and the evolution of cooperation in a Moran process with exponential fitness” I am still struggling to understand when it would be appropriate to assume an exponential (rather than linear) fitness function. It is wonderful that these modelers are mapping out all these different conditions under which cooperation evolves, but how to select Read More

A Minor Post, Articles, Cooperation, Evolutionary Modeling, Game Theory

Asymmetrical interaction best explained by superrational rather than rational strategy

Posted 08 Sep 2015 / 0

This View of Life “How Fairness Depends On Your Social Status” I found this study — which I am discovering a bit late — to be really interesting in light of a paper I published with co-authors earlier this year. It seems that when interactions are asymmetric, players in a “dominant” position tend to be Read More

A Minor Post, Altruism, Cooperation, Game Theory, Multilevel Selection, Reputation, Social Capital, Social Norms, Web

Should altruism have an effect on your final exam score?

Posted 17 Aug 2015 / 0

The Chronicle of Higher Education “This ‘Extra Credit’ Question Does No Credit to Fairness” This seems like kind of a dumb stunt on the part of the psychology professor who posed it. I never really respected my professors who did not take very seriously the idea that students are pretty amped up by the experience Read More

A Minor Post, Altruism, Articles, Assessment Methods, Ethics, Game Theory, MSCI-270, Ecology, MSCI-463, The Evolution of Cooperation

E&E in A&D: The Armstrong Lie

Posted 18 Jan 2015 / 0

I just finished watching the 2013 documentary The Armstrong Lie. I do not get much time to watch movies — and my favorite genre of movie, documentaries — very much these days, but I used to be a big fan of pro cycling in the Armstrong era, so I knew that I had to check Read More

A Major Post, Altruism, Behavior, Cooperation, Cultural Evolution, Film & Video, Game Theory, Group Selection, Play, Punishment, Reciprocity, Reputation, Social Norms

Our paper on a super-rational solution to the tragedy of the commons published in Scientific Reports

Posted 14 Jan 2015 / 0

I am very pleased to announce that a paper that I worked on with collaborators Jun-Zhou He, Rui-Wu Wang, and Yao-Tang Li has been published in the open-access journal Scientific Reports. The paper, entitled “Asymmetric interaction paired with a super-rational strategy might resolve the tragedy of the commons without requiring recognition or negotiation“, considers how Read More

A Major Post, Altruism, Behavior, Behavioral Ecology, Coevolution, Cooperation, Game Theory, Multilevel Selection, My publications, Phenotypic Plasticity

Do cancer cells play cooperate in the Prisoner’s Dilemma?

Posted 26 Jul 2014 / 0

PLoS One “Prisoner’s Dilemma in Cancer Metabolism” What is interesting here is that cancer cells must cooperate with each other in order to out-compete somatic cells against a staggering cost-to-benefit ratio. Generated by the extreme inefficiency of anaerobic metabolism, this ratio presents a supreme challenge to a developing tumor, which might be one factor explaining Read More

A Minor Post, Articles, Cooperation, Game Theory, Health & Medicine, Quantifying Costs and Benefits

My Evolution 2014 talk is on YouTube

Posted 17 Jul 2014 / 0

One nice thing that organizers of the Evolution 2014 conference did was to offer the opportunity for presenters to have their talk recorded and archived. These recorded talks now have their own Evolution 2014 YouTube Channel, and my talk is included in this collection: This was an experiment for this conference, and I think that it came Read More

A Major Post, Conferences, Cooperation, Easy Iterated Prisoner's Dilemma, Evolution Education, Evolutionary Games Infographics, Game Theory, Information Design, My publications, Science in Art & Design, Society for the Study of Evolution, Talks & Seminars, Teaching Tools

Cath Dennis publishes non-computerized classroom adaptation of Axelrod’s iPD Tournament

Posted 30 May 2014 / 0

I have corresponded with Cath Dennis of the University of Aberdeen, as we both share an interest in how to bring some of the foundational work exploring cooperation into our classrooms. She has just published one of her classroom activities — an “analog” version of Robert Axelrod’s iPD tournaments — in the Journal of Biological Education.

A Minor Post, Articles, Cooperation, Evolution Education, Evolutionary Modeling, Game Theory, Reciprocity, Teaching Tools