EXCESS SMOOTHNESS OF CONSUMPTION IN JAPAN*

The purpose of this paper is to test whether excess smoothness of consumption, which is not consistent with the permanent income hypothesis (PIH), is observed in Japan. Two simple testing procedures are employed and several measures of Japanese aggregate consumption are used in the analysis. Further, for purposes of comparison, US aggregate data and Japanese income quintile group data are also used. The findings of the paper are the following: all estimates of the consumption variability ratio indicate an excess smoothness of consumption in Japan; the results of tests of PIH differ depending on the testing procedures and the measures of consumption used, in contrast to the results for the US; and the consumption variability ratio is likely to be smaller in lower income groups. This suggests the possible existence of significant liquidity constraints or transactions costs in Japan.     

The Repository of Soft Information within Bank Organizations

We examine who is the repository of soft information within bank organizations. Inconsistent with the conventional view of loan officers as the sole repository, we find that branch managers have the most soft information. We also find the repository at a higher hierarchical level at smaller banks. Furthermore, our evidence suggests that branch managers themselves actively collect soft information, especially at smaller banks. These findings suggest the need for a more nuanced view beyond the conventional emphasis on loan officers, and call for studies on the equilibrium design of the collection, processing, and use of soft information within bank organizations.     

Can News Be a Major Source of Aggregate Fluctuations? A Bayesian DSGE Approach

We examine whether the news shocks, as explored in Beaudry and Portier (2004) , can be a major source of aggregate fluctuations. For this purpose, we extend a standard dynamic stochastic general equilibrium model of Christiano, Eichenbaum, and Evans (2005) and Smets and Wouters (2003, 2007) by allowing news shocks on the total factor productivity (TFP), and estimate the model using Bayesian methods. Estimation results on the U.S. and Japanese economies suggest that (i) news shocks play a relatively more important role in the United States than in Japan, (ii) a news shock with a longer forecast horizon has larger effects on nominal variables, and (iii) the overall effect of the TFP on hours worked becomes ambiguous in the presence of news shocks.