'Liberal Mind' author's extensive study explains 'Psychological Causes of Political Madness' With the American left, the Democratic Party and the establishment news media displaying ever-more bizarre symptoms of Trump Derangement Syndrome, here comes a veteran psychiatrist making the case that the mental-emotional world of leftists really is tantamount to a mental disorder. “Based on strikingly irrational beliefs and emotions, modern liberals relentlessly undermine the most important principles on which our freedoms were founded,” says Dr. Lyle Rossiter, author of the acclaimed book, “The Liberal Mind: The Psychological Causes of Political Madness.” “Like spoiled, angry children, they rebel against the normal...