Using the framework of a dynamic intertemporal optimization model of an open economy, it is shown that the long-run investment-saving correlation follows directly from the economy's dynamic budget constraint and this does not depend on the degree of international capital mobility. Therefore, unless the budget constraint is violated, the time series of investment and saving should be cointegrated, and this should be true for any degree of capital mobility. Using an improved econometric technique, which encompasses the tests used by previous authors and avoids some of the pitfalls associated with their tests, I show that their conflicting findings can be explained by a simple but important, omitted variables problem. Using annual and quarterly post-war U.S. data, I find that investment and saving are cointegrated in levels as well as in rates, regardless of the time period considered, as predicted by the model.
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Length: 33 pages Date of creation: 07 Feb 2004 Date of revision:
12 May 2005 Handle: RePEc:wpa:wuwpif:0402002
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Find related papers by JEL classification: F02 - International Economics - - General - - - International Economic Order; Noneconomic International Organizations;; Economic Integration and Globalization: General F21 - International Economics - - International Factor Movements and International Business - - - International Investment; Long-Term Capital Movements F32 - International Economics - - International Finance - - - Current Account Adjustment; Short-term Capital Movements F41 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - Open Economy Macroeconomics C32 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Time-Series Models; Dynamic Quantile Regressions C50 - Mathematical and Quantitative Methods - - Econometric Modeling - - - General
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Young, Andrew & Higgins, Matthew & Levy, Daniel, 2006.
"Heterogeneous Convergence,"
MPRA Paper
954, University Library of Munich, Germany.
[Downloadable!]
Other versions:
Matthew J. Higgins & Daniel Levy & Andrew T. Young, 2006.
"Heterogeneous Convergence,"
Emory Economics
0615, Department of Economics, Emory University (Atlanta).
[Downloadable!]
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