On September 11, 2001, the "Fear Switch" in our brains got flicked. How do we turn it off and reclaim our lives? Five years after September 11, we're still scared. And why not? Terrorists could strike at any moment. Our country is at war. The polar caps are melting. Hurricanes loom. We struggle to control our fear so that we can go about our daily lives. Our national consciousness has been torqued by trauma, in the process transforming our behavior, our expectations, our legal system. In The Myth of Sanity, Martha Stout, who until recently taught at the Harvard Medical School, analyzed how we cope with personal trauma. In her national bestseller The Sociopath Next Door, she showed how to avoid suffering psychological damage at the hands of others. Now, in The Paranoia Switch, she offers a groundbreaking clinical, neuropsychological, and practical examination of what terror and fear politics have done to our minds, and to the very biology of our brains. In this timely and essential book, Stout assures us that we can interrupt the cycle of trauma and look forward to a future free of fear only by understanding our own paranoia—and what flips the paranoia switch.