GDP Growth: Cutting Through the Noise

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January 2015 SIMPLYSTATED Endnotes 1. The output gap is defined as the percentage deviation of actual real GDP from potential real GDP. Potential GDP is typically estimated as the level of production consistent with full employment and stable inflation (see for instance the Congressional Budget Office estimates for the United States). 2. Another source of noise comes from the fact that GDP values are revised in subsequent months after they are reported. Although the mean revision is close to zero on average, revisions can have magnitudes greater than 2% in some quarters. Research has shown that U.S.

revisions cannot be forecasted with significant accuracy. See Faust, Rogers, and Wright (2005). 3. Solow (1957) and Jorgenson and Griliches (1967) are seminal works in the growth-accounting literature. References Arnott, Robert D., and Denis B. Chaves.

2012. “Demographic Changes, Financial Markets, and the Economy,” Financial Analysts Journal, vol. 68, no.

1 (January/February):23–46. Barro, Robert J. 1991. “Economic Growth in a Cross Section of Countries,” Quarterly Journal of Economics, vol.

106, no. 2 (May):407–443. Cohen, Patricia. 2014.

“3rd-Quarter Growth Rate Is Revised Up, to 3.9%.” New York Times (November 25). Faust, Jon, John H. Rogers, and Jonathan H. Wright.

2005. “News and Noise in G-7 GDP Announcements.” Journal of Money, Credit, and Banking, vol. 37, no. 3 (June):403–420. Feenstra, Robert C., Robert Inklaar, and Marcel P.

Timmer. 2013. “The Next Generation of the Penn World Table.” http://www.rug.nl/research/ggdc/data/penn-world-table Fernald, John G. 2014.

“Productivity and Potential Output Before, During, and After the Great Recession,” Working Paper, Federal Reserve Bank of San Francisco. http:/ / www.frbsf.org/economic-research/publications/workingpapers/wp2014-15.pdf Laubach, Thomas, and John C. Williams 2003.

“Measuring the Natural Rate of Interest.” Review of Economics and Statistics, vol. 85, no. 4 (November):1063–1070. Jorgenson, Dale, and Zvi Griliches.

1967. “The Explanation of Productivity Change,” Review of Economic Studies, vol. 34, no.

3 (July):249–280. Solow, Robert M. 1957. “Technical Change and the Aggregate Production Function,” Review of Economics and Statistics, vol.

39, no. 3 (August):312–320. ABOUT THE AUTHORS Jim Masturzo focuses on global tactical asset allocation. He is responsible for codifying expected return methodologies across all major asset classes.

In addition, Jim acts as a product manager for our publicly available asset allocation resources, supporting the clear and accurate communication of RA’s strategic views and promoting the use of our asset allocation website. He is also involved in RAFI strategy development and management. Jim has a BS in electrical engineering from Cornell University and a MBA from Duke University’s Fuqua School of Business. He is a member of CFA Institute and the CFA Society of Orange County. M​ichele Mazzoleni conducts empirical research on macroeconomics, term structure forecasting, and international finance.

He contributes to the global tactical asset allocation strategies and RAFI Fundamental Index portfolio construction. Michele earned a Ph.D. in economics from the Johns Hopkins University, an M.Sc. in economics from the London School of Economics, and a B.A.

in economics from the University of Lugano in Switzerland. Before starting his graduate studies, he worked in the Foreign Exchange division of UBS in Lugano. The material contained in this document is for information purposes only. This material is not intended as an offer or solicitation for the purchase or sale of any security or financial instrument, nor is it investment advice on any subject matter.

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