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LERNER INDEX: The difference between price (p) and marginal cost (mc) as a fraction of price, that is [p-mc]/p. The Lerner index is usually taken as an indicator of market power because the larger the index, the larger the difference between price and marginal cost, that is, the larger the distance between the price and the competitive price. The Lerner index depends on the elasticity of demand. The Lerner index is also called the price-cost margin.

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BUSINESS CYCLE: The recurring expansions and contractions of the national economy (usually measured by real gross domestic product). A complete cycle typically lasts from three to five years, but could last ten years or more. It is divided into four phases -- expansion, peak, contraction, and trough. Unemployment inevitably rises during contractions and inflation tends to worsen during expansions. To avoid the inflation and unemployment problems of business cycles, the federal government frequently undertakes various fiscal and monetary policies.

     See also | real gross domestic product | economy | full-employment production | resources | aggregate expenditures | contraction | recession | expansion | peak | trough | recovery | unemployment | inflation | fiscal policy | monetary policy | business cycle phases | circular flow | business cycle measurement | economic indicators |


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MACROECONOMIC MARKETS

Three sets of markets that make up the macroeconomy--product, financial, and resource--which exchange the three primary types of macroeconomic commodities--gross production, legal claims, and factor services. The four macroeconomic sectors--household, business, government, and foreign--interact through these three sets of markets. The primary objective of macroeconomic theories is to explain activity that takes place in these three sets of markets.

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Today, you are likely to spend a great deal of time at a crowded estate auction trying to buy either a small palm tree that will fit on your coffee table or several magazines on fashion design. Be on the lookout for broken fingernail clippers.
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Parker Brothers, the folks who produce the Monopoly board game, prints more Monopoly money each year than real currency printed by the U.S. government.
"Always remember that striving and struggle precede success, even in the dictionary. "

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