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MACROECONOMIC SECTORS: The four aggregate sectors of the macroeconomy--household, business, government, and foreign--that reflect four key macroeconomic functions and are responsible for four expenditures on gross domestic product. These four sectors are the primary "actors" on the macroeconomic stage. Macroeconomic theories then explain macroeconomic phenomena by exploring the interaction among these four sectors.
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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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Today, you are likely to spend a great deal of time surfing the Internet trying to buy either a travel case for you toothbrush or a looseleaf notebook binder. Be on the lookout for slow moving vehicles with darkened windows.
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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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"Every man must decide whether he will walk in the light of creative altruism or in the darkness of destructive selfishness." -- Martin Luther King, Jr., clergyman
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