Christopher X J. Jensen
Associate Professor, Pratt Institute

An anecdote that illustrates the tremendous power of human network reciprocity

Posted 13 Sep 2013 / 0

NPR Morning Edition StoryCorps “How One Man Continues To ‘Just Pass It On’” The story of this man’s life and how he has reacted to the kindness of a stranger nicely encapsulates the very powerful nature of human network reciprocity. Rather than focusing on “repaying the kindness”, Thomas Weller was charged to “pass it on”. Read More

A Minor Post, Behavior, Cultural Evolution, Evolutionary Psychology, Human Uniqueness, MSCI-463, The Evolution of Cooperation, Radio & Podcasts, Reciprocity, Social Networks, Social Norms

A tour of your diverse microbiome, and the things that might deplete that diversity

Posted 09 Sep 2013 / 0

NPR Morning Edition “From Birth, Our Microbes Become As Personal As A Fingerprint” It’s a bit corny, but this is a great tour of our diverse microbiome. It is critical that people start to recognize how potentially-damaging overuse of antibiotics and fear of bacteria could be to our health. It will be exciting to see Read More

A Minor Post, Coevolution, Human Evolution, Mismatch theory, Mutualism, Radio & Podcasts, Reciprocity

My review of “Origins of Altruism and Cooperation” is published in QRB

Posted 30 Aug 2013 / 0

I am excited to report that my review of Origins of Altruism and Cooperation was just published in the Quarterly Review of Biology. Although it requires some work to get through, this collection presents a really important counter-narrative to the prevailing attitude in evolutionary biology that altruism is simply self-interest in disguise. The book uses Read More

A Major Post, Altruism, Behavior, Books, Cooperation, Cultural Evolution, Empathy, Group Selection, Human Evolution, Human Uniqueness, Kin Selection, Multilevel Selection, My publications, Primatology, Reciprocity, Social Networks, Social Norms

Cooperative child-rearing pays dividends for ruffed lemurs, irrespective of kinship

Posted 23 Aug 2013 / 0

Mongabay News “The evolution of cooperation: communal nests are best for ruffed lemurs” Behavioral Ecology and Sociobiology “Communal nesting, kinship, and maternal success in a social primate” What I find particularly interesting about these findings is that they appear to show that kinship — if a factor at all — might well be a byproduct Read More

A Minor Post, Articles, Behavioral Ecology, Cooperation, Kin Selection, Mating systems, Mutualism, Reciprocity, Reproductive Fitness, Tropical Forest, Web

National Geographic “The Short Happy Life of a Serengeti Lion”

Posted 23 Aug 2013 / 0

National Geographic “The Short Happy Life of a Serengeti Lion” This article provides a great overview of the kind of work that Craig Packer’s research group does in the Serengeti to understand the social behavior of lions. There is valuable information here on why lions are social (unlike other large cats), why lions must cooperate, Read More

A Minor Post, Articles, Behavior, Behavioral Ecology, Carrying Capacity, Cooperation, Grasslands, Kin Selection, Predation, Reciprocity

Zero determinant strategy is just another short-term adaptation

Posted 15 Aug 2013 / 0

The Scientist “A Twist in Evolutionary Game Theory: Biologists demonstrate the instability of employing a selfish strategy in the prisoner’s dilemma game” Nature Communications “Evolutionary instability of zero-determinant strategies demonstrates that winning is not everything” I am so glad to see that someone did the math and simulations to look at the long-term stability of Read More

A Minor Post, Adaptation, Articles, Behavior, Coevolution, Cooperation, Evolutionary Modeling, Game Theory, Individual-based Models, Phenotypic Plasticity, Punishment, Reciprocity, System Stability

A spatial version of the Traveler’s Dilemma allows cooperation to persist

Posted 23 Mar 2013 / 0

PLos ONE “Evolution of Cooperation in Spatial Traveler’s Dilemma Game“

A Minor Post, Cooperation, Game Theory, Reciprocity, Spatially Explicit Modeling

Just in case you missed it the first ten times: E.O. Wilson likes group selection, Jerry Coyne does not

Posted 16 Mar 2013 / 1

Why Evolution is True “E. O. Wilson mistakenly touts group selection (again) as a key factor in human evolution“

A Minor Post, Cooperation, Evolution, Group Selection, Kin Selection, Reciprocity

Understanding kin selection and reciprocity when strategies are culturally propagated

Posted 16 Mar 2013 / 0

arXiv “Self-Organization Promotes the Evolution of Cooperation with Cultural Propagation“

A Minor Post, Cooperation, Cultural Evolution, Evolutionary Modeling, Game Theory, Kin Selection, Reciprocity

Freeman Dyson wins the contest, and then says the contest is stupid

Posted 07 Dec 2012 / 0

Institute for Advanced Study “The Prisoner’s Dilemma” One of my favorite skateboarders when I was young was Natas Kaupas, an innovative skater who pioneered a lot of modern streetstyle. Natas was one of those skaters who could do things that no other skateboarders could, but he was not particularly successful in one arena that was Read More

A Minor Post, Articles, Cooperation, Evolutionary Modeling, Game Theory, Group Selection, Human Evolution, Modeling (General), Multilevel Selection, Reciprocity