Author:
Hennig-Schmidt, Heike
Title: Family Expenditure Survey, Methodology and Data Used in Microeconomic Demand Analysis
Abstract: Neoclassical demand theory is based on the assumption that individuals behave in such a way that
they maximize their preference relation under budget constraints. Under reasonable additional
assumptions this hypothesis was thought to give enough structure to the model of a consumption
sector that together with the production sector of an economy uniqueness and stability of a general
equilibrium model would be ensured. Research in this area has shown that this hope is only fulfilled
if either strong assumptions are made on the preference relations of the individuals or on the
distribution of individual characteristics, especially on the distribution of individual income and
expenditure (Hildenbrand 1983). The advantage of the latter approach is that these assumptions, even
if they are extremely restrictive, refer to observable entities while preference relations cannot
be observed.
In order to test the above mentioned hypothesis one needs information on the distribution of income
and expenditure in an economy. Family budget surveys provide the necessary data for these analyses.
In particular, the Family Expenditure Survey of the United Kingdom does extremely fit this purpose
since data are available not only for individual income and expenditure but also for a great variety
of household characteristics. Moreover, the detailed information indispensable for our analyses can
relatively easy be obtained for as long a period as nearly 20 years.
The purpose of this paper is to give the methodological background of the Family Expenditure Survey
as well as explanations and definitions of those items that have been or reasonably could be utilized
in microeconomic demand analysis.
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Creation-Date: April 1989
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