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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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ELASTIC The general relation between two variables in which relatively small changes in one variable (A) cause relatively large changes in another variable (B). Small changes in variable A cause relatively large changes in variable B or the percentage change in variable B is larger than the percentage change in variable A. This characterization of elasticity is most important for the price elasticity of demand and the price elasticity of supply. Elastic is one of two general elasticity relations between two variables. The other is inelastic.
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BLACK DISMALAPOD
[What's This?]
Today, you are likely to spend a great deal of time wandering around the downtown area hoping to buy either a how-to book on home repairs or a large, stuffed kitty cat. 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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Only 1% of the U.S. population paid income taxes when the income tax was established in 1914.
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"We tend to forget that happiness doesn't come as a result of getting something we don't have, but rather of recognizing and appreciating what we do have." -- Fredrick Koeing
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RJE
RAND Journal of Economics
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