Simon Baron-Cohen is professor of developmental psychopathology at the University of Cambridge and director of the Autism Research Centre in Cambridge. He is the author of a number of books, including The Science of Evil: On Empathy and the Origins of Cruelty (Basic Books, 2011), Prenatal Testosterone in Mind (The MIT Press, 2005) and The Essential Difference: Men, Women and the Extreme Male Brain (Basic Books, 2003).