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AGGREGATE DEMAND: The total (or aggregate) real expenditures on final goods and services produced in the domestic economy that buyers would willing and able to make at different price levels, during a given time period (usually a year). Aggregate demand (AD) is one half of the aggregate market analysis; the other half is aggregate supply. Aggregate demand, relates the economy's price level, measured by the GDP price deflator, and aggregate expenditures on domestic production, measured by real gross domestic product. The aggregate expenditures are consumption, investment, government purchases, and net exports made by the four macroeconomic sectors (household, business, government, and foreign).
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ASSUMPTIONS, KEYNESIAN ECONOMICS The macroeconomic study of Keynesian economics relies on three key assumptions--rigid prices, effective demand, and savings-investment determinants. First, rigid or inflexible prices prevent some markets from achieving equilibrium in the short run. Second, effective demand means that consumption expenditures are based on actual income, not full employment or equilibrium income. Lastly, important savings and investment determinants include income, expectations, and other influences beyond the interest rate. These three assumptions imply that the economy can achieve a short-run equilibrium at less than full-employment production.
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GREEN LOGIGUIN
[What's This?]
Today, you are likely to spend a great deal of time looking for the new strip mall out on the highway looking to buy either a birthday greeting card for your father or a T-shirt commemorating the first day of spring. Be on the lookout for slightly overweight pizza delivery guys.
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This isn't me! What am I?
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Al Capone's business card said he was a used furniture dealer.
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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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IIA
Irrelevance of Independent Alternatives
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