"The Inner Chimp"

Serendipity is the harmonic convergence of unexpected events or objects at an expected time (or place) to the benefit of those witnessing the event.

Serendipity happens.

Like yesterday (March 10, 2012). I was driving back from the fencing club -- a usual occurence for a Saturday afternoon -- and tuned into the local public radio station (WGBH) into the middle of an RadioLab episode, something I occasionally do. The episode was one I had never heard before: "Morality."

In particular, it was the segment "Chimp Fights and Trolley Rides," an interview with neuroscientist/philosopher Josh Greene about whether or now morality is biologically and evolutionarily based.

Greene argues "yes."

It seems that there are some basic, emotional decisions which correspond to activity parts of the brain corresponding to the instinctual, primate parts that have helped us as a species survive.

This emotional part, in the words of host/commentator Bob Krulwich, is the "inner chimp."

Based on his brain scans of people making moral decisions of varying degrees of complexity, Greene has found that different centers of the brain "light up" in response to different types of questions. For really complex questions that involve a "moral calculus" -- such as deciding to sacrifice one for the good of the many -- brain activity is fast, furious, and wide-spread. As Greene and Krulwich described it, the brain is "at war with itself." The frontal lobe, the area that develops later in a person's life, registers more activity when the decision-maker is counting how many others would be affected by the choice. It's "the thinker" vs. the "the inner chimp."

I love the term "inner chimp." It seems so right.

Later in the episode, the RadioLab team discusses actual primates -- with an interview with primatologist Frans de Waal at the Yerkes Center -- and their consistent moral behavior. Chimps and other primates are social animals with moral systems, as de Waal's examples show. (Click here for a 2005 article, too.) Empathy is a significant part of being a primate -- and it seems to be the moral core of the "inner chimp."

The research into what works in the brain when also is fascinating. And the issue of how people make decisions based on their emotionally-held beliefs is one of current importance.

Now, the serendipity:

1) See above. Although I have been a fan of Robert Krulwich since about 1990, I don't catch RadioLab often and this episode I had not heard before.

2) Although this episode was broadcast in 2007, on the day that would have been my mother's birthday had she not passed away earlier in the year, this episode coincides with a my current inner discourse about education and how to help adolescents grow up. More on that in a future post.

3) Joshua Greene is now a professor at Harvard, the site of my own cognitive science training. You can read much more in depth about the moral dilemmas Greene poses for research at his homepage.

4) Today's newspaper published a piece that connects to this RadioLab episode. More on that next post....

Fascinating stuff, serendipity!

Below is an embed for the podcast of the RadioLab episode "Morality":




image credit: Chimpanzees at Gombe Stream National Park, 2010, by ikiwaner, at Wikimedia Commons.