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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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INCREASING MARGINAL RETURNS In the short-run production by a firm, an increase in the variable input results in an increase in the marginal product of the variable input. Increasing marginal returns typically surface when the first few quantities of a variable input are added to a fixed input. This is one of two alternatives for marginal returns. The other is decreasing marginal returns. A related phenomenon for long-run production is increasing returns to scale.
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BLACK DISMALAPOD
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Today, you are likely to spend a great deal of time at an auction hoping to buy either a flower arrangement with a lot of roses for your grandmother or a wall poster commemorating the first day of winter. Be on the lookout for gnomes hiding in cypress trees.
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This isn't me! What am I?
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The portrait on the quarter is a more accurate likeness of George Washington than that on the dollar bill.
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"Those who are blessed with the most talent don't necessarily outperform everyone else. It's the people with follow-through who excel. " -- Mary Kay Ash, May Kay Cosmetics founder
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DI
Disposable Income
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