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Our immersion into the world of neuroscience for this week’s program with Paul Zak has given me a label for one of the uplifting parts of my weekdays — my “oxytocin moment.” It’s the moment I exit work to pick up my 7-month-old son. Walking to the car, a rush of energy, excitement, and warmth comes over me as I eagerly anticipate how his smile widens when he recognizes me, and the giggle that bubbles up when I hug him and tickle him under the chin. I can’t get to him fast enough, and I’m certain one day a fender-bender will be the result of my mad dash to exit work and pick him up.

So now I interpret that rush to be a surge of oxytocin in my brain. The hormone has long been known for its role in childbirth and the mother/child bonding process that I acutely experience these days. But as Zak’s research is showing, it has other profound influences on broader social behavior, including our ability to trust. Since my brain fails to fire the neurons needed to comprehend neuroscience, I went looking for easily digestible descriptions of his work, and found a few helpful things.

His article, “The Neurobiology of Trust,” in the June 2008 issue of Scientific American is a helpful overview, with simple visuals, of how he became interested in oxytocin’s relation to trust, how his experiment — the “Trust Game” — was conducted and its findings, and some of the implications of his research. Besides its impact on the field of economics, I’ll be curious to see if future insights emerge about oxytocin’s relationship to neurological disorders like schizophrenia or maladies such as social anxiety.

Also helpful, and fun, was a 2005 television segment from the Australian Broadcasting Company science program Catalyst. The reporter participates in Zak’s trust game as well as a related experiment using MRI imaging of his brain. He talks to Zak and other scientists about the biology of trust, from primates to humans.

And, given my current life status as a new mom, I enjoyed stumbling upon Hug the Monkey, a blog about the latest research and issues around oxytocin’s best-known function by science and technical writer Susan Kuchinskas.


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2 Comments

I've been intrigued by the 2000 study by researchers at UCLA that looked at women and their way of managing stress -- to "tend and befriend -- and noted that when under stress, women's bodies produced oxytocin and that as women responded to stress by seeking other women (phone calls, visits, etc.), even more ocytocin was generated in the body, helping to make the women more and more calm. Fascinating.

As a dad-to-be I have heard the word oxytocin so many times, so I was glad to hear more about it on this week's show. The whole concept of oxytocin forming the basis of trust mechanisms in human beings is kind of wild.

The teacher from our birth class also mentioned that one of the ways that oxytocin is released is when women get together and talk.