わが国における1990年以降の消費生活構造の特徴 : AIDS (Almost Ideal Demand System)による分析

概要

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The objective of this paper is to analyze the Japanese household consumption patterns during 1990-2003, after the bubble economy burst, by estimating a Linear Approximate Almost Ideal Demand System (LAIDS) model. The author used the quarterly workers' household data compiled in Annual Report on the Family Income and Expenditure Survey. Empirical results show that the items such as "Food," "Fuel, light and water charge," "Medical care" and "Reading and recreation" were necessities, and "Housing," "Furniture and household utensils," "Clothes and footwear," "Transportation and communication," and "Education" were luxuries. While the luxury items strongly responded to own-price change, the necessity items showed weak response. A lot of necessity items were independent of other items, but luxury items such as "Clothes and footwear," "Education," "Reading and recreation" and "Other living expenditure," were notably substitutional or complementary for other items. "Education" was substitutional not only with luxuries but also with some necessity items. It proves that Japanese household has struggled to maintain the high educational expenses until reducing the necessity in the long period of recession following the bubble economy burst, because "Education" is an important item of life cycle planning.
2006-03-15