A primer on the economics and time series econometrics of wealth effects: a comment
In a recent paper ("A Primer on the Economics and Time Series Econometrics of Wealth Effects," 2001), Davis and Palumbo investigate the empirical relation between three cointegrated variables: aggregate consumption, asset wealth, and labor income. Although cointegration implies that an equilibrium relation ties these variables together in the long run, the authors focus on the following structural question about the short-run dynamics: "How quickly does consumption adjust to changes in income and wealth? Is the adjustment rapid, occurring within a quarter, or more sluggish, taking place over many quarters?" The authors claim that their findings answer this question, and imply that spending adjusts only gradually after gains or losses in income or wealth have been realized. We argue here, however, that a statistical methodology different from that used by Davis and Palumbo is required to address these questions, and that once it has been employed, the resulting empirical evidence weighs considerably against their interpretation of the data.
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- Lettau, Martin & Ludvigson, Sydney, 1999.
"Consumption, Aggregate Wealth and Expected Stock Returns,"
CEPR Discussion Papers
2223, C.E.P.R. Discussion Papers.
- Martin Lettau, 2001. "Consumption, Aggregate Wealth, and Expected Stock Returns," Journal of Finance, American Finance Association, vol. 56(3), pages 815-849, 06.
- Sydney Ludvigson & Martin Lettau, 1999. "Consumption, aggregate wealth and expected stock returns," Staff Reports 77, Federal Reserve Bank of New York.
- Morris A. Davis & Michael G. Palumbo, 2001. "A primer on the economics and time series econometrics of wealth effects," Finance and Economics Discussion Series 2001-09, Board of Governors of the Federal Reserve System (U.S.).
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- Johansen, Soren, 1992. "Cointegration in partial systems and the efficiency of single-equation analysis," Journal of Econometrics, Elsevier, vol. 52(3), pages 389-402, June.
- Sydney Ludvigson & Charles Steindel, 1999.
"How important is the stock market effect on consumption?,"
Economic Policy Review,
Federal Reserve Bank of New York, issue Jul, pages 29-51.
- Sydney Ludvigson & Charles Steindel, 1998. "How important is the stock market effect on consumption?," Research Paper 9821, Federal Reserve Bank of New York.
- Engle, Robert F & Granger, Clive W J, 1987. "Co-integration and Error Correction: Representation, Estimation, and Testing," Econometrica, Econometric Society, vol. 55(2), pages 251-76, March.
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