Jonah Lehrer talked about his book, How We Decide (Houghton Mifflin; February 9, 2009), with Robert Krulwich of NPR's Radio Lab. The author describes how the brain makes decisions that combine reason and feeling and can change depending on the situation. Mr. Lehrer studies several subjects, including a professional football quarterback, a hedge fund manager, and an airline pilot to determine how decisions are made in certain environments and how they can be made better. Mr. Lehrer responded to audience members questions. Jonah Lehrer is editor at large for Seed Magazine and edits the "Mind Matters" blog for Scientific American. He is the author of Proust was a Neuroscientist.