The easiest way to explain the never-ending string of Wall Street scandals and implosions is to observe that a surprising percentage of people in the financial industry are psychos. The latest edition of CFA Magazine, a trade publication for chartered financial analysts, features an article claiming one out of 10 people working on Wall Street are psychopaths. Sherree DeCovny, the former investment broker who wrote the piece, says the estimate came from researchers, including a psychologist who treats Wall Street professionals. In the 2005 book, "The Sociopath Next Door," Harvard University psychologist Martha ... (full story)