The essence of affection. The cuddle chemical. In other words, oxytocin.
This hormone, produced daily by your brain and mine, is the reason I’m on my back, trying to remain perfectly still inside a magnetic-resonance-imaging machine secreted in the basement of a cheerless building at the California Institute of Technology. Even though I am cocooned by earplugs and noise-cancellation headphones, it’s freakishly loud in here, a mix of jackhammer pulses and a hurricane whoosh of air. In other words, it’s your typical MRI experience — save for the Apple laptop bolted a couple of feet above my head, the mouse on my chest, and the unbearably sad video playing on the MacBook screen.
I have volunteered for this, signing up to be a test subject for Dr. Love, aka Paul J. Zak, a professor at Claremont Graduate University who popularized “neuroeconomics,” an emerging field that combines economics with biology, neuroscience, and psychology. In this first of three experiments, I’m helping Zak’s researchers gauge the relationship between empathy and generosity. While best-selling behavioral economists such as Dan Ariely (Predictably Irrational) and Steven D. Levitt (half of the Freakonomics duo) ponder how we make economic decisions, Zak wants to figure out why we do what we do.
In a series of studies spanning nine years, Zak has changed our understanding of human beings as economic animals. Oxytocin is the key (and please, do not confuse the cuddle drug with the painkiller oxycontin). Known for years as the hormone forging the unshakable bond between mothers and their babies, oxytocin is now, thanks largely to Zak, recognized as the human stimulant of empathy, generosity, trust, and more. It is, Zak says, the “social glue” that adheres families, communities, and societies, and as such, acts as an “economic lubricant” that enables us to engage in all sorts of transactions. Zak is a walking advertisement for oxytocin; his vanity license plate reads oxytosn, and he hugs virtually everyone he meets. (“I’ll hug you, too,” he warns.) It’s this passion for the hormone that led to his Claremont campus nickname, Dr. Love.
But I didn’t come to L.A. in search of love, or even a hug. I came for answers. Specifically, I wondered if Zak’s research could be applied to social media, an area I’ve explored in my own work. What explains the need of our BlackBerry-bearing, Twitter-tweeting Facebook friends for constant connectivity? Are we biologically hardwired to do it? Do our brains react to tweeting just as they do to our physical engagement with people we trust and enjoy?
