Much thanks to storyteller, Robin Reichert, for bringing this to my attention.
Over on Brain Pickings, Maria Popova highlights experiments done by Paul Zak, a neuroeconomics engineer. (And, no, I don't know what a neuroeconomics engineer is. It sounds a little scary, though.) These experiments showed how listening to a story effected brain chemistry and changed test subjects behavior.
You can watch the video and read Popova's article here.
It's nice to have empirical data that confirms what we storytellers have known all along. Stories change us. So, be careful what you tell. Stories are not just for entertainment - and they never have been.