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INFLATIONARY EXPECTATIONS, AGGREGATE DEMAND DETERMINANT: One of several specific aggregate demand determinants assumed constant when the aggregate demand curve is constructed, and that shifts the aggregate demand curve when it changes. An increase in the inflationary expectations causes an increase (rightward shift) of the aggregate curve. A decrease in the inflationary expectations causes a decrease (leftward shift) of the aggregate curve. Other notable aggregate demand determinants include interest rates, federal deficit, and the money supply.

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Lesson 17: Money | Unit 4: Money's History Page: 17 of 25

Topic: Barter <=PAGE BACK | PAGE NEXT=>

A long time ago, our ancestors realized that life could be better with a little trading.
  • Our ancestors first satisfied their own wants and needs.
  • Then, self-sufficiency gave way to barter.

Two reasons for barter:

  • First: Barter lets resources specialize in production.
  • Second: With barter trades, people can access a wider variety of goods than they could produce on their own.
  • Barter is a more effective way of satisfying our wants and needs.

However barter is not perfect:

  • We need double coincidence of wants.
  • It takes resources for trades.

Therefore:

  • Our ancestors progressed to the next stage: commodity money.

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AVERAGE VARIABLE COST CURVE

A curve that graphically represents the relation between average variable cost incurred by a firm in the short-run product of a good or service and the quantity produced. This curve is constructed to capture the relation between average variable cost and the level of output, holding other variables, like technology and resource prices, constant. The average variable cost curve is one of three average curves. The other two are average total cost curve and average fixed cost curve. A related curve is the marginal cost curve.

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Today, you are likely to spend a great deal of time lost in your local discount super center wanting to buy either a coffee cup commemorating last Friday (you know why) or a wall poster commemorating the first day of spring. Be on the lookout for the happiest person in the room.
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The Dow Jones family of stock market price indexes began with a simple average of 11 stock prices in 1884.
"Man is born to live, not to prepare for life. "

-- Boris Pasternak, writer

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