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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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Lesson 2: Economic Science | Unit 2: Theory Page: 7 of 20

Topic: Economic Theories <=PAGE BACK | PAGE NEXT=>

Three common economic theories:
  • Markets theory: It helps us understand how and why prices change, shortages and surpluses occur, and markets are monopolized.
  • Aggregate Markets theory: It uses principles and concepts developed in the theory of markets, but adapts them to the study macroeconomic things like inflation, unemployment, national production, and business cycles.
  • Keynesian theory: Named after it's creator John Maynard Keynes, it was developed to explain high rates of unemployment and other economic conditions that existed during the Great Depression of the 1930s.

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SPECIALIZATION

The condition in which resources are primarily devoted to specific production tasks. This is one of THE most important and most fundamental notions in the study of economics. Civilized human beings have long recognized that limited resources can be more effectively used in the production of the goods and services that satisfy unlimited wants and needs if those resources specialize.

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BEIGE MUNDORTLE
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Today, you are likely to spend a great deal of time at a garage sale looking to buy either a lazy Susan for you dining room table or a set of serrated steak knives, with durable plastic handles. Be on the lookout for deranged pelicans.
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Helping spur the U.S. industrial revolution, Thomas Edison patented nearly 1300 inventions, 300 of which came out of his Menlo Park "invention factory" during a four-year period.
"We should never allow ourselves to be bullied by an either-or. There is often the possibility of something better than either of those two alternatives. "

-- Mary Parker Follett, management coach

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