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AGGREGATE DEMAND DETERMINANTS: An assortment of ceteris paribus factors that affect aggregate demand, but which are assumed constant when the aggregate demand curve is constructed. Changes in any of the aggregate demand determinants cause the aggregate demand curve to shift. While a wide variety of specific ceteris paribus factors can cause the aggregate demand curve to shift, it's usually most convenient to group them into the four, broad expenditure categories -- consumption, investment, government purchases, and net exports. The reason is that changes in these expenditures are the direct cause of shifts in the aggregate demand curve. If any determinant affects aggregate demand it MUST affect one of these four expenditures.
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VARIABLE INPUT An input whose quantity can be changed in the time period under consideration. The most common example of a variable input is labor. Variable inputs provide the means used by a firm to control short-run production. The alternative to variable input is fixed input. A fixed input, like capital, provides the capacity constraint in production. As larger quantities of a variable input, like labor, are added to a fixed input like capital, the variable input becomes less productive, which is the law of diminishing marginal returns.
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GREEN LOGIGUIN
[What's This?]
Today, you are likely to spend a great deal of time calling an endless list of 800 numbers hoping to buy either a brown leather attache case or car battery jumper cables. Be on the lookout for fairy dust that tastes like salt.
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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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"Don't be afraid of the space between your dreams and reality. If you can dream it, you can make it so." -- Belva Davis, Journalist
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Income, Nominal Gross National Product
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