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CHANGE IN AGGREGATE DEMAND: A shift of the aggregate demand curve caused by a change in one of the aggregate demand determinants. In essence, a change in aggregate demand is caused by any factor affecting aggregate demand EXCEPT the price level. This concept should be contrasted directly with a change in aggregate expenditures. You might also want to review the terms change in quantity demanded and change in demand, as well. The change in aggregate demand is comparable to the change in market demand. A change in aggregate demand is a change in ALL price level-aggregate expenditure combinations, meaning that each price level is matched up with a different aggregate expenditure (which is illustrated as a shift of the aggregate demand curve). This change in aggregate demand is caused by a change in any of the aggregate demand determinants. In contrast, a change in aggregate expenditures is a change from one price level-aggregate expenditure combination to the another (which is illustrated as a movement along a given aggregate demand curve).
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MARKET FAILURES Imperfections in the exchange process between buyers and sellers that prevent markets from efficiently allocating scarce resources. Market failures come in four varieties -- public goods, market control, externalities, and imperfect information. Market efficiency is achieved if the value of goods produced is equal to the value of foregone production. Markets fail when this efficiency condition is not achieved. Such failures can only be corrected by government intervention.
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PURPLE SMARPHIN
[What's This?]
Today, you are likely to spend a great deal of time looking for the new strip mall out on the highway seeking to buy either a video camera with stop action features or one of those memory foam pillows. Be on the lookout for vindictive digital clocks with revenge on their minds.
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This isn't me! What am I?
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In the early 1900s around 300 automobile companies operated in the United States.
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"The first responsibility of a leader is to define reality. " -- Max DePree, executive
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KLCE
Kuala Lumpur Commodity Exchange (Malaysia)
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