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  • Kaushik Mitra (a1), George W. Evans (a2) and Seppo Honkapohja (a3)

Using the standard real business cycle model with lump-sum taxes, we analyze the impact of fiscal policy when agents form expectations using adaptive learning rather than rational expectations (RE). The output multipliers for government purchases are significantly higher under learning, and fall within empirical bounds reported in the literature, which is in sharp contrast to the implausibly low values under RE. Positive effects of fiscal policy are demonstrated during times of economic stress like the recent Great Recession. Finally, it is shown how learning can lead to consumption and investment dynamics empirically documented during some episodes of “fiscal consolidations.”

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Address correspondence to: Seppo Honkapohja, Bank of Finland, P.O. Box 160, FI 00101 Helsinki, Finland; e-mail:
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An earlier version of the paper was circulated as “Fiscal Policy and Learning.” We are very grateful for financial support from ESRC Grant RES-062-23-2617 and from National Science Foundation Grant no. SES-1025011 without which this work could not have been carried out. Useful comments from referees and an associate editor are gratefully acknowledged. Any views expressed are those of the authors and do not necessarily reflect the views of the Bank of Finland.

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A. Alesina and S. Ardagna (2010) Large changes in fiscal policy: Taxes versus spending. Tax Policy and the Economy 24, 3568.

A. Alesina , S. Ardagna , R. Perotti and F. Schiantarelli (2002) Fiscal policy, profits, and investment. American Economic Review 92, 571589.

A. Auerbach , W. G. Gale and B. H. Harris (2010) Activist fiscal policy. Journal of Economic Perspectives 24, 141164.

R. J. Barro and R. G. King (1984) Macroeconomic effects from government purchases and taxes. Quarterly Journal of Economics 99, 817839.

R. J. Barro and C. J. Redlick (2011) Macroeconomic effects from government purchases and taxes. Quarterly Journal of Economics 126, 51102.

A. Benveniste , M. Metivier and P. Priouret (1990) Adaptive Algorithms and Stochastic Approximations. Berlin: Springer-Verlag.

M. Berardi (2013) Escape dynamics and policy specification. Macroeconomic Dynamics 17, 123142.

J. Y. Campbell (1994) Inspecting the mechanism: An analytical approach to the stochastic growth model. Journal of Monetary Economics 33, 463506.

V. Chari , P. J. Kehoe and E. R. McGrattan (2007) Business cycle accounting. Econometrica 75, 781836.

R. Chetty , A. Guren , M. Day and A. Weber (2011) Are micro and macro labor supply elasticities consistent? A review of evidence on the intensive and extensive margins. American Economic Review: Papers and Proceedings 101, 471475.

L. Christiano , M. Eichenbaum and S. Rebelo (2011) When is the government spending multiplier large? Journal of Political Economy 119, 78121.

G. Corsetti , K. Kuester , A. Meier and G. J. Muller (2010) Debt consolidation and fiscal stabilization of deep recessions. American Economic Review: Papers and Proceedings 100, 4145.

G. Corsetti , A. Meier and G. J. Muller (2012) Fiscal stimulus with spending reversals. Review of Economics and Statistics 94, 878895.

S. Eusepi and B. Preston (2011) Expectations, learning and business cycle fluctuations. American Economic Review 101, 28442872.

G. W. Evans , S. Honkapohja and R. Marimon (2001) Convergence in monetary inflation models with heterogeneous learning rules. Macroeconomic Dynamics 5, 131.

G. W. Evans , S. Honkapohja and K. Mitra (2009) Anticipated fiscal policy and learning. Journal of Monetary Economics 56, 930953.

G. W. Evans , S. Honkapohja and K. Mitra (2012) Does Ricardian equivalence hold when expectations are not rational? Journal of Money, Credit and Banking 44, 12591283.

C. Giannitsarou (2006) Supply-side reforms and learning dynamics. Journal of Monetary Economics 53, 291309.

R. E. Hall (2009) By how much does GDP rise If the government buys more output? Brookings Papers on Economic Activity 2009, 183231.

E. Ilzetzki , E. G. Mendoza and C. A. Vegh (2013) How big (small?) are fiscal multipliers? Journal of Monetary Economics 60, 239254.

J. B. Long Jr. and C. I. Plosser (1983) Real business cycles. Journal of Political Economy 91, 3969.

A. Marcet and J. P. Nicolini (2003) Recurrent hyperinflations and learning. American Economic Review 93, 14761498.

A. Marcet and T. J. Sargent (1989) Convergence of least-squares learning mechanisms in self-referential linear stochastic models. Journal of Economic Theory 48, 337368.

K. Mertens and M. O. Ravn (2014) Fiscal Policy in an Expectation Driven Liquidity Trap. Review of Economic Studies 81, 16371667.

F. Milani (2007) Expectations, learning and macroeconomic persistence. Journal of Monetary Economics 54, 20652082.

K. Mitra , G. W. Evans and S. Honkapohja (2013) Policy change and learning in the RBC model. Journal of Economic Dynamics and Control 37, 19471971.

R. Nunes (2009) Learning the inflation target. Macroeconomic Dynamics 13, 167188.

A. Orphanides and J. C. Williams (2007) Robust monetary policy with imperfect knowledge. Journal of Monetary Economics 54, 14061435.

R. Perotti (1999) Fiscal policy in good times and bad. Quarterly Journal of Economics 114, 13991436.

B. Preston (2006) Adaptive learning, forecast-based instrument rules and monetary policy. Journal of Monetary Economics 53, 507535.

V. A. Ramey (2011a) Can government purchases stimulate the economy? Journal of Economic Literature 49, 673685.

V. A. Ramey (2011b) Identifying government spending shocks: It's all in the timing. Quarterly Journal of Economics 126, 150.

Morten O. Ravn , S. Schmitt-Grohe and M. Uribe (2012) Consumption, government spending, and the real exchange rate. Journal of Monetary Economics 59, 215234.

T. J. Sargent (2008) Evolution and intelligent design. American Economic Review 98, 537.

J. Taylor and M. Woodford (eds.) (1999) Handbook of Macroeconomics, vol. 1, Amsterdam: Elsevier.

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Macroeconomic Dynamics
  • ISSN: 1365-1005
  • EISSN: 1469-8056
  • URL: /core/journals/macroeconomic-dynamics
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