Neuroscientists at the Brain and Creativity Institute at the University of Southern California in Los Angeles recruited subjects with staunch political positions and, using an fMRI scanner, looked at their brain activity when their beliefs were challenged. Parts of their brains lit up as if they were being chased by a bear. And when we are in this fight, flight, or freeze mode, it’s incredibly hard to listen. (“So tell me, Mr. Bear, why are you chasing me?”)