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  • Print publication year: 2005
  • Online publication date: July 2010

2 - Household Equilibrium

Summary

INTRODUCTION

We are now ready to begin the economic analysis of the household. This chapter is devoted to developing the basic economic model of the household that underlies the remaining discussion. The model is set up to analyze the household's demand for goods and services, which will prepare for the discussion in Chapter 3. The model abstracts from the many household attributes and environmental factors, concentrating on two important attributes: (1) the set of goods and services the household can afford, given its income and market prices, and (2) the goals of the household expressed in terms of the preferences it has for goods. The former attribute – what the household can have – is described by the household's budget constraint; the latter – its goals – is described by the household's preference map and utility function. We discuss each in turn. To add concreteness to the analysis we will use food as an example. Hence, we are interested in developing a model of the household that will allow us to analyze the demand for food. The analysis will be general, however, and applicable to the demand for any good.

THE BUDGET CONSTRAINT

In each period (say, a year) we suppose the household to enter the marketplace to purchase those quantities of food and other goods and services that will maximize the family's satisfaction. In doing so it faces market prices for food and other things along with the limited income it possesses.

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