Long Run Simulations With GTAP: Illustrative Results from APEC Trade Liberalisation
1998, March In static applied general equilibrium models, the exogenous/endogenous split between variables (or closure) is used to infer the time frame over which the effects of a shock are simulated. This paper introduces a long-run closure for the GTAP Model (Hertel and Tsigas, 1997) and uses this closure to simulate and compare the short-run and long-run effects of Asia-Pacific trade liberalisation. The approach explored here incorporates some relatively minor changes to existing GTAP theory in order to define a steady state in which growth rates of all real variables are uniform. Such uniformity must apply in the initial database (as well as in the post-shock solution). So to implement the new long run in GTAP a new initial database must first be created. Details concerning the creation of the new database are given, and results under the new approach are compared with those obtained under the old. The emphasis of this paper is on the development of a long-run closure in which the percentage change form equations of the model and the relationships between the levels variables in the GTAP Data Base are consistent. Further research is required into these types of long-run closures to incorporate changes in ownership of capital to ensure that changes in welfare are adequately modelled. In the results reported here, GDP is not a useful guide to national welfare. The long-run closures introduced here are also compared with another comparative static long-run closure developed for GTAP by Francois, MacDonald and Nordström (1996). Technical Paper Number 9 can be downloaded in PDF format. To print this you will need the Adobe Acrobat Reader. For those interested in replicating the results in this technical paper, an associated zip file can be downloaded. The zip file includes a readme file with detailed instructions.
|Date of creation:||1998|
|Note:||GTAP Technical Paper No. 09|
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- Goulder, Lawrence H. & Eichengreen, Barry, 1989.
"Trade Liberalization in General Equilibrium: Intertemporal and Inter-Industry Effects,"
Department of Economics, Working Paper Series
qt0ws6559g, Department of Economics, Institute for Business and Economic Research, UC Berkeley.
- Lawrence H. Goulder & Barry Eichengreen, 1992. "Trade Liberalization in General Equilibrium: Intertemporal and Inter-industry Effects," Canadian Journal of Economics, Canadian Economics Association, vol. 25(2), pages 253-280, May.
- Lawrence H. Goulder and Barry Eichengreen., 1989. "Trade Liberalization in General Equilibrium: Intertemporal and Inter-Industry Effects," Economics Working Papers 89-110, University of California at Berkeley.
- Lawrence H. Goulder & Barry Eichengreen, 1989. "Trade Liberalization in General Equilibrium: Intertemporal and Inter-Industry Effects," NBER Working Papers 2965, National Bureau of Economic Research, Inc.
- Philip D. Adams & Karen M. Huff & Robert McDougall & K.R. Pearson & Alan A. Powell, 1996. "Medium- and Long-run Consequences for Australia of an APEC Free Trade Area: CGE Analyses using the GTAP and MONASH Models," Centre of Policy Studies/IMPACT Centre Working Papers g-111, Victoria University, Centre of Policy Studies/IMPACT Centre.
- Hertel, Thomas, 1997. "Global Trade Analysis: Modeling and applications," GTAP Books, Center for Global Trade Analysis, Department of Agricultural Economics, Purdue University, number 7685, November.
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