David McRaney is an American author, journalist, and podcast host who explores psychology, behavioral economics, and cognitive biases in his work. He is best known for his book "You Are Not So Smart," which challenges common misconceptions about how people think and make decisions, illuminating the cognitive biases and logical fallacies to which we are all prone. Following the success of his first book, he has written other works including "You Are Now Less Dumb," which provides a more in-depth look at self-delusion and the ways people can overcome their inherent irrationality. McRaney also hosts a podcast with the same name as his first book, where he interviews scientists, scholars, and thinkers about their work in the field of psychology. His engaging and accessible approach to complex topics in psychology has made his work popular among readers interested in understanding the quirks of the human mind.