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( Daehoon Nahm ),( Joseph Macri ) 한양대학교 경제연구소 2016 JOURNAL OF ECONOMIC RESEARCH Vol.21 No.2
We employ a specially-structured VAR model to firstly examine the total effects of Australia``s monetary policy changes on private sector variables, specifically, household consumption, housing wealth, and house prices, through impulse responses. We then utilise the special structure of the model to decompose the total effect of monetary policy changes on consumption into the direct effect from changes in the cost of credit, the indirect wealth effect from changes in house prices and housing wealth, and the feedback effect from the reaction of the Reserve Bank of Australia to changes in consumption, house prices and housing wealth. Our results suggest that a deliberate monetary policy shock has a significant effect on house prices, but only a marginal effect on consumption. We also introduce a novel approach to identify the elements of the impulse response function in decomposing the total consumption effect into direct, indirect and feedback effects.
The Effects of New Goods and Substitution on the Korean CPI as a Measure of Cost of Living
Daehoon Nahm 한국국제경제학회 2015 International Economic Journal Vol.29 No.1
This paper estimates upper-level substitution and new-goods bias in the Korean Consumer Price Index (CPI) from the early 1990s to the mid 2000s. It has been estimated that the upper-level substitution bias in the CPI alone increased the inflation rate by 0.51 percentage points per year over the 13-year period between 1990 and 2002. The new-goods bias further increased the inflation rate by 0.17 and 0.13 percentage points per year between 1990-1995 and 1995-2000 respectively. The Chained Laspeyres index series that is based on annually-updated weights has been found to correct less than half of the upper-level substitution bias.
Daehoon Nahm 서울대학교 경제연구소 1998 Seoul journal of economics Vol.11 No.3
The current Consumer Price Index (CPI) is a biased estimator of the true cost of living (COL). Incorrect treatment of quality change in existing products and the introduction of new products is known to be a major source of the bias. One of the practical problems that make it hard to properly incorporate the effect of newly introduced or disappeared products into the CPI is that the price of a new product in the pre-introduction period and the price of a disappeared product in the period it disappears are unobservable. The present paper introduces an index number formula which overcomes that problem. The index number formula is exact for the constant-elasticity-of-substitution (CES) preference ordering if the elasticity of substitution is known. Unlike the formula introduced by Feenstra (1994), it separates a change in the COL into three parts, Namely, New, disappeared and existing products.