Christopher X J. Jensen
Associate Professor, Pratt Institute

That beard and deep voice may be to put him in his place, not attract her

Posted 09 Nov 2015 / 0

There have been a lot of evolutionary psychology experiments that have tried to define both female and male attractiveness to the opposite sex, an indirect way to get at the nature of sexual selection in humans. A new study published in Behavioral Ecology reminds us that sexual selection is not the only process that has Read More

A Minor Post, Articles, Behavior, Behavioral Ecology, Communication, Evolutionary Psychology, Human Uniqueness, MSCI-362, The Evolution of Sex, Psychological Adaptation, Quantifying Costs and Benefits, Reputation, Sex and Reproduction, Sexual Competition, Sexual Selection

Explaining the evolutionary explanation for handedness

Posted 13 Aug 2015 / 0

This is a wonderful little video that is absolutely packed with great ideas about how evolution works, how human evolution works, and how two different evolutionary pressures pushing in opposite directions reach equilibrium. It also makes wonderful use of infographic techniques, using color and quantity throughout the video to clearly convey numerical and conceptual ideas Read More

A Minor Post, Adaptation, Cooperation, Cultural Evolution, Educational Software and Apps, Evolutionary Modeling, Film, Television, & Video, Gene-Culture Coevolution, Human Evolution, MSCI-463, The Evolution of Cooperation, Quantifying Costs and Benefits, Social Norms

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

Is “nest parasitism” really “nest mutualism”?

Posted 20 May 2014 / 0

NPR All Things Considered “This Freeloading Bird Brings Help — And The Help Smells Gross” It is hard to believe that feeding an entire extra non-offspring would be in the self-interest of a bird, but as this short points out, costs and benefits are always environment-specific. In this case, the “parasitic” effect of having to raise Read More

A Minor Post, Behavior, Birds, Coevolution, Mutualism, Parasitism, Predation, Quantifying Costs and Benefits, Radio & Podcasts

If sloths endure costs to maintain closed-loop agricultural systems, why can’t we?

Posted 05 Feb 2014 / 0

The New York Times “The Sloth’s Busy Inner Life” This is a great story about how paradoxical behaviors can be understood through appreciating mutualisms. If you don’t understand the benefits of algae to sloths and sloths to algae,  you can’t understand this behavior. But you also need to understand how sloths directly benefit moths and how Read More

A Minor Post, Adaptation, Articles, Behavior, Behavioral Ecology, Closed Loop Systems, Coevolution, Community Ecology, Composting, Mutualism, Predation, Quantifying Costs and Benefits, Tropical Forest

Slate article explores the big brain, big society connection

Posted 31 Oct 2012 / 0

Slate “Tool use and exploration may be just side effects of social skills” Great examples in this short piece of how scientists quantify the benefits of social connection in terms of survival and reproduction. It will be interesting to see how the “Social Brain Hypothesis” stacks up against the “Cultural Intelligence Hypothesis” in future research, Read More

A Minor Post, Articles, Brain size, Evolution, Human Evolution, Human Uniqueness, Hypothesis Testing, Neuroscience, Quantifying Costs and Benefits, Web