Brad DeLong is a former guest blogger at the Washington Center for Equitable Growth. He is also a professor of economics at the University of California, Berkeley, a research associate of the NBER, and a fellow of the Institute for New Economic Thinking, and was from 1993-1995 a deputy assistant secretary of the U.S. Treasury. He teaches economic history, macroeconomics, economic growth, and occasionally finance, political economy, and principles of economics. He writes, mostly, about the changing nature of the business cycle, the mainsprings of economic growth, the current economy in historical perspective, and the past economy in contemporary perspective.  He received his B.A. in social studies and Ph.D. in economics, both from Harvard University.