The Economist | A dearth of competition among firms helps explain wage inequality and a host of other ills, writes The Economist, in its review of various lines of research. Cites work by Harvard's Richard Freeman (joint with Erling Barth, Alex Bryson, and James Davis) and by Raven Malloy (Ph.D. '11) (joint with Christopher Smith and Abigail Wozniak). Malloy is now section chief with the Board of Governors of the Federal Reserve System.