N. Gregory Mankiw is Robert M. Beren Professor of Economics at Harvard University. For 14 years he taught EC10 Principles, the most popular course at Harvard. He studied economics at Princeton University and MIT. Prof. Mankiw is a prolific writer and a regular participant in academic and policy debates. His research includes work on price adjustment, consumer behaviour, financial markets, monetary and fiscal policy, and economic growth. His published articles have appeared in academic journals such as the American Economic Review, Journal of Political Economy, and Quarterly Journal of Economics. His work has also appeared in more widely accessible forums, including The New York Times, The Washington Post, The Wall Street Journal, and Fortune. Prof. Mankiw has been a research associate of the National Bureau of Economic Research, an adviser to the Federal Reserve Bank of Boston and the Congressional Budget Office, and a member of the ETS test development committee for the advanced placement exam in economics. From 2003 to 2005, he served as chairman of the President’s Council of Economic Advisers.