If you read "I Am Charlotte Simmons" you know that Tom Wolfe has an ongoing interest in evolutionary psychology and neuroscience. In that book he mentions a book by Mike Gazzaniga, a friend of mine and leading neuroscientists. Here is a cool conversation between the two of them on the general topic. A transcript of the discussion is here (or at least it is represented as such--from what I can tell the video and transcript don't really match up completely).