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Keynesian AD-AS, Quo Vadis?

We formulate a dynamic AD-AS model based on gradually adjusting wages and prices, perfect foresight of current inflation rates and adaptive expectations concerning the inflation climate in which the economy operates. The model consists of a wage and a price Phillips curve, a dynamic IS curve as well as a dynamic employment adjustment equation (Okun’s law) and a Taylor interest rate rule. The model can be reduced to a 3D dynamical system by a suitable choice of the Taylor rule and implies strong stability results, in particular for an appropriately chosen interest rate policy rule. Through instrumental variables GMM system estimation with aggregate time series data for the U.K. economy, we obtain parameter estimates which support the specification of our theoretical model and its stability implications. We contrast these results with the standard (formally similarly structured) New Keynesian model with staggered wage and price setting where determinacy of the dynamics represents a severe problem and where (if determinacy can be achieved) inertia-free stability is obtained by the very choice of the solution method.

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File URL: http://www.finance.uts.edu.au/research/wpapers/wp151.pdf
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Paper provided by Finance Discipline Group, UTS Business School, University of Technology, Sydney in its series Working Paper Series with number 151.

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Length: 44
Date of creation: 01 Nov 2007
Date of revision:
Handle: RePEc:uts:wpaper:151
Contact details of provider: Postal: PO Box 123, Broadway, NSW 2007, Australia
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Web page: http://www.uts.edu.au/about/uts-business-school/finance

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  1. Blanchard, Olivier J, 1981. "Output, the Stock Market, and Interest Rates," American Economic Review, American Economic Association, vol. 71(1), pages 132-43, March.
  2. Jordi Galí, 2000. "The return of the Phillips curve and other recent developments in business cycle theory," Spanish Economic Review, Springer, vol. 2(1), pages 1-10.
  3. Jordi Galí & Mark Gertler, 1998. "Inflation dynamics: A structural econometric analysis," Economics Working Papers 341, Department of Economics and Business, Universitat Pompeu Fabra.
  4. Pu Chen & Carl Chiarella & Peter Flaschel & Willi Semmler, 2006. "Keynesian Macrodynamics and the Phillips Curve. An Estimated Baseline Macromodel for the U.S. Economy," Working Paper Series 147, Finance Discipline Group, UTS Business School, University of Technology, Sydney.
  5. Svensson, Lars E. O., 1998. "Inflation targeting as a monetary policy rule," CFS Working Paper Series 1998/16, Center for Financial Studies (CFS).
  6. Jordi Galí & Mark Gertler & J. David López-Salido, 2000. "European Inflation Dynamics," Banco de Espa�a Working Papers 0020, Banco de Espa�a.
  7. repec:cup:cbooks:9780521643511 is not listed on IDEAS
  8. Chen Pu & Flaschel Peter, 2006. "Measuring the Interaction of Wage and Price Phillips Curves for the U.S. Economy," Studies in Nonlinear Dynamics & Econometrics, De Gruyter, vol. 10(4), pages 1-35, December.
  9. Peter Flaschel & Göran Kauermann & Willi Semmler, 2007. "Testing Wage And Price Phillips Curves For The United States," Metroeconomica, Wiley Blackwell, vol. 58(4), pages 550-581, November.
  10. Lawrence F. Katz & Olivier Blanchard, 1999. "Wage Dynamics: Reconciling Theory and Evidence," American Economic Review, American Economic Association, vol. 89(2), pages 69-74, May.
  11. Chiarella, Carl & Flaschel, Peter, 1996. "Real and monetary cycles in models of Keynes-Wicksell type," Journal of Economic Behavior & Organization, Elsevier, vol. 30(3), pages 327-351, September.
  12. Robert J. Barro, 1994. "The Aggregate-Supply/Aggregate-Demand Model," Eastern Economic Journal, Eastern Economic Association, vol. 20(1), pages 1-6, Winter.
  13. Blanchard, Olivier Jean & Kahn, Charles M, 1980. "The Solution of Linear Difference Models under Rational Expectations," Econometrica, Econometric Society, vol. 48(5), pages 1305-11, July.
  14. repec:cup:cbooks:9780521850254 is not listed on IDEAS
  15. Krolzig, Hans-Martin & Peter Flaschel, 2003. "Wage and Price Phillips Curves," Royal Economic Society Annual Conference 2003 128, Royal Economic Society.
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