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COMMON MARKET: An agreement among two or more nations to eliminate trade restrictions with each other, to adopt a common trade policy with other nations, and to allow free movement of resources among their countries. There is, however, no effort to adopt common monetary or fiscal policies. This is considered the third of four levels of integration among nations. Customs union, economic union, and free-trade area are the other three levels.

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Lesson Contents
Unit 1: Demand Theory
  • The Theory
  • Making Decisions
  • Utility
  • On To Demand
  • Unit 1 Summary
  • Unit 2: Total Utility
  • A Measure Of Satisfaction
  • Total Utility Schedule
  • Utility Maximization
  • Unit 2 Summary
  • Unit 3: Marginal Utility
  • Incremental Satisfaction
  • Measuring Marginal Utility
  • Diminishing Marginal Utility
  • Getting Satisfied
  • Diamond-Water Paradox
  • Unit 3 Summary
  • Unit 4: The Curves
  • Total Utility
  • Marginal Utility
  • Both Curves
  • Unit 4 Summary
  • Unit 5: Taking Stock
  • Two Laws
  • Two Considerations
  • Unit 5 Summary
  • Course Home
    Consumer Demand

    This lesson discusses the basics of consumer demand theory, especially the notion of utility. Utility is the fancy-schmancy economic term that means satisfying wants and needs. The purpose of this lesson is to set the stage for a behind-the-scenes look at the demand-side of the market. Because the prices buyers are willing to pay for the goods depend on the utility, an understanding of demand requires an understanding of utility.

    • The first unit of this lesson, Demand Theory, introduces the concept of utility and previews the relation between utility, consumer decision making, and demand.
    • In the second unit, Total Utility, we take a look at the first of two key technical notions of utility are used to examine the relation between utility and demand.
    • The third unit, Marginal Utility, presents and discusses the second of the two technical notions of utility, and the most important notion underlying demand.
    • The fourth unit, The Curves, illustrates the total utility and marginal utility concepts with handy graphs.
    • The fifth unit, Taking Stock, then wraps up this lesson with an extended preview of the relation between utility and demand.

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    TAX WEDGE

    The difference between demand price and supply price that is created when a tax is imposed on a market. Placing a tax on a market disrupts what otherwise would be an equilibrium equality between demand price and supply price. A tax wedge results because the tax is included in the demand price paid by buyers but not in the supply price received by sellers. With standard demand (negative slope) and supply (positive slope) curves, the incidence of the tax (who pays) is divided between buyers and sellers.

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    WHITE GULLIBON
    [What's This?]

    Today, you are likely to spend a great deal of time browsing through a long list of dot com websites trying to buy either clothing for your pet iguana or a set of hubcaps. Be on the lookout for empty parking spaces that appear to be near the entrance to a store.
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    Lombard Street is London's equivalent of New York's Wall Street.
    "Concentrate all your thoughts upon the work at hand. The sun's rays do not burn until brought to a focus."

    -- Alexander Graham Bell, inventor

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