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Extrapolative Expectations and Macroeconomic Dynamics: Evidence from an Estimated DSGE Model

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JournalInternational Journal of Finance and Economics
DateAccepted/In press - 18 Jun 2020
DateE-pub ahead of print (current) - 22 Jul 2020
Early online date22/07/20
Original languageEnglish

Abstract

We outline a dynamic stochastic general equilibrium (DSGE) model with extrapolative expectations in as-set pricing and fit the model to 50 years of quarterly U.S. macroeconomic time series data with Bayesian techniques. We conclude that extrapolative expectations in asset pricing are statistically significant, quantitatively relevant and result in a substantial improvement in the model’s fit to the data. In particular, extrapolative expectations in asset pricing lead to more pronounced hump-shaped responses in the asset price and investment to shocks, and the model matches the degree of persistence observed in the asset price data significantly better than the alternative DSGE models considered here, which are the Smets and Wouters (2007) model, including a variant of the model with pre-determined investment expenditures, and the Gilchrist et al. (2009) financial frictions model. Our findings are confirmed by numerous robustness exercises, including different prior assumptions, different sample periods and different time series variables, both excluding asset price data and the use of different asset price measures.

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© 2020 The Authors. International Journal of Finance & Economics published by John Wiley & Sons Ltd.

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