Inflation persistence and the rationality of inflation expectations

Sophocles Brissimis and Petros Migiakis

MPRA Paper from University Library of Munich, Germany

Abstract: The rational expectations hypothesis for survey and model-based inflation forecasts − from the Survey of Professional Forecasters and the Greenbook respectively − is examined by properly taking into account the persistence characteristics of the data. The finding of near-unit-root effects in the inflation and inflation expectations series motivates the use of a local-to-unity specification of the inflation process that enables us to test whether the data are generated by locally non-stationary or stationary processes. Thus, we test, rather than assume, stationarity of near-unit-root processes. In addition, we set out an empirical framework for assessing relationships between locally non-stationary series. In this context, we test the rational expectations hypothesis by allowing the co-existence of a long-run relationship obtained under the rational expectations restrictions with short-run "learning" effects. Our empirical results indicate that the rational expectations hypothesis holds in the long run, while forecasters adjust their expectations slowly in the short run. This finding lends support to the hypothesis that the persistence of inflation comes from the dynamics of expectations.

Keywords: Inflation; rational expectations; high persistence (search for similar items in EconPapers)
JEL-codes: C32 C50 D84 E31 E37 E52 (search for similar items in EconPapers)
Date: 2010-12
New Economics Papers: this item is included in nep-cba, nep-ecm and nep-mon
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Related works:
Journal Article: Inflation persistence, learning dynamics and the rationality of inflation expectations (2016)
Working Paper: Inflation persistence and the rationality of inflation expectations (2013)
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Persistent link: https://EconPapers.repec.org/RePEc:pra:mprapa:29052

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