scholarly journals Information Rigidity and the Expectations Formation Process: A Simple Framework and New Facts

2015 ◽  
Vol 105 (8) ◽  
pp. 2644-2678 ◽  
Author(s):  
Olivier Coibion ◽  
Yuriy Gorodnichenko
Keyword(s):  
Formation Process ◽  
Rational Expectations ◽  
Imperfect Information ◽  
State Dependence ◽  
Expectations Hypothesis ◽  
Economic Significance ◽  
Expectations Formation ◽  
Information Models ◽  
International Data ◽  
Information Rigidity

We propose a new approach to test the full-information rational expectations hypothesis which can identify whether rejections of the null arise from information rigidities. This approach quantifies the economic significance of departures from the null and the underlying degree of information rigidity. Applying this approach to US and international data of professional forecasters and other agents yields pervasive evidence consistent with the presence of information rigidities. These results therefore provide a set of stylized facts which can be used to calibrate imperfect information models. Finally, we document evidence of state-dependence in the expectations formation process. (JEL C53, D83, D84, E13, E31, E37)

scholarly journals Micro-level tests for rational expectations in South Africa

1997 ◽  
Vol 28 (1) ◽  
pp. 15-26 ◽  
Author(s):  
D. J. Marais ◽  
E. V.D.M. Smit ◽  
W. J. Conradie
Keyword(s):  
Rational Expectations ◽  
Weak Form ◽  
Economic Research ◽  
Expectations Hypothesis ◽  
Business Survey Data ◽  
Expectations Formation ◽  
Micro Level ◽  
The Business Cycle ◽  
Business Survey ◽  
Economic Concentration

The article investigates entrepreneurial expectations formation along the lines of the rational expectations hypothesis. It utilizes micro-level business survey data from the Bureau for Economic Research and distinguishes between phases of the business cycle, consumer and capital goods industries and various degrees of sectoral economic concentration. Very little evidence of weak form rationality is present in the data which concurs with similar international evaluations.

scholarly journals THE MISSPECIFICATION OF EXPECTATIONS IN NEW KEYNESIAN MODELS: A DSGE-VAR APPROACH

2017 ◽  
Vol 23 (3) ◽  
pp. 974-1007 ◽  
Author(s):  
Stephen J. Cole ◽  
Fabio Milani
Keyword(s):  
Rational Expectations ◽  
Model Misspecification ◽  
Dynamic Stochastic General Equilibrium ◽  
New Keynesian ◽  
Dynamic Interactions ◽  
Expectations Hypothesis ◽  
Expectations Formation ◽  
Keynesian Model ◽  
New Keynesian Models ◽  
Dynamic Stochastic

This paper tests the ability of New Keynesian models to match the data regarding a key channel for monetary transmission: the dynamic interactions between macroeconomic variables and their corresponding expectations. We exploit survey expectations data and adopt a dynamic stochastic general equilibrium (DSGE)-VAR approach to assess the extent and sources of model misspecification. The results point to serious misspecification in the expectations-formation side of the DSGE model. The rational expectations hypothesis is primarily responsible for the model's failure to capture the co-movements between observed macroeconomic expectations and realizations. Alternative models of expectations formation help partially reconcile the New Keynesian model with the data.

A NOTE ON MUTH'S RATIONAL EXPECTATIONS HYPOTHESIS: A TIME-VARYING COEFFICIENT INTERPRETATION

2006 ◽  
Vol 10 (3) ◽  
pp. 415-425 ◽  
Author(s):  
P.A.V.B. SWAMY ◽  
GEORGE S. TAVLAS
Keyword(s):  
Rational Expectations ◽  
Econometric Model ◽  
Objective Probability ◽  
Varying Coefficient Models ◽  
Time Varying ◽  
Exact Representation ◽  
Expectations Hypothesis ◽  
Varying Coefficient ◽  
True Model ◽  
Necessary And Sufficient

Under certain interpretations of its coefficients, a specified econometric model is an exact representation of the “true” model, defining the “objective” probability distribution. This note enumerates these interpretations. In the absence of the conditions implied by these interpretations, the econometric model is misspecified. The note shows that model misspecifications prevent the satisfaction of a necessary and sufficient condition for individual expectations to be rational in Muth's sense. Whereas restrictive forms of econometric models can give very inaccurate predictions, this note describes the conditions under which the predictions generated from time-varying coefficient models coincide with the predictions generated from the relevant economic theory.

scholarly journals The Formation of Expectations, Inflation, and the Phillips Curve

2018 ◽  
Vol 56 (4) ◽  
pp. 1447-1491 ◽  
Author(s):  
Olivier Coibion ◽  
Yuriy Gorodnichenko ◽  
Rupal Kamdar
Keyword(s):  
Survey Data ◽  
Rational Expectations ◽  
Phillips Curve ◽  
Rational Expectation ◽  
New Keynesian ◽  
Inflation Expectations ◽  
Full Information ◽  
Macroeconomic Modeling ◽  
Expectations Formation

This paper argues for a careful (re)consideration of the expectations formation process and a more systematic inclusion of real-time expectations through survey data in macroeconomic analyses. While the rational expectations revolution has allowed for great leaps in macroeconomic modeling, the surveyed empirical microevidence appears increasingly at odds with the full-information rational expectation assumption. We explore models of expectation formation that can potentially explain why and how survey data deviate from full-information rational expectations. Using the New Keynesian Phillips curve as an extensive case study, we demonstrate how incorporating survey data on inflation expectations can address a number of otherwise puzzling shortcomings that arise under the assumption of full-information rational expectations. (JEL D04, E24, E27, E31, E37)

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