In Jonathan Haidt\'s "The Righteous Mind: Why Good People Are Divided by Politics and Religion," the author examines the deep-seated differences between people of different political and religious beliefs
From Wikipedia
Jonathan David Haidt is an American social psychologist and author. He is the Thomas Cooley Professor of Ethical Leadership at the New York University Stern School of Business. Haidt's main areas of study are the psychology of morality and moral emotions.