Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/108635 
Year of Publication: 
2013
Series/Report no.: 
Working Paper No. 1321
Publisher: 
Koç University-TÜSİAD Economic Research Forum (ERF), Istanbul
Abstract: 
Changing time series properties of US inflation and economic activity, measured as marginal costs, are modeled within a set of extended Phillips Curve (PC) models. It is shown that mechanical removal or modeling of simple low frequency movements in the data may yield poor predictive results which depend on the model specification used. Basic PC models are extended to include structural time series models that describe typical time varying patterns in levels and volatilities. Forward and backward looking expectation components for inflation are incorporated and their relative importance is evaluated. Survey data on expected inflation are introduced to strengthen the information in the likelihood. Use is made of simulation based Bayesian techniques for the empirical analysis. No credible evidence is found on endogeneity and long run stability between inflation and marginal costs. Backward-looking inflation appears stronger than forward-looking one. Levels and volatilities of inflation are estimated more precisely using rich PC models. The extended PC structures compare favorably with existing basic Bayesian vector autoregressive and stochastic volatility models in terms of fit and prediction. Tails of the complete predictive distributions indicate an increase in the probability of deflation in recent years.
Subjects: 
New Keynesian Phillips curve
unobserved components
time varying parameters
level shifts
inflation expectations
survey data
JEL: 
C11
C32
E31
E37
Document Type: 
Working Paper

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