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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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KINKED-DEMAND CURVE A demand curve with two distinct segments which have different elasticities that join to form a corner or kink. The primary use of the kinked-demand curve is to explain price rigidity in oligopoly. The two segments are: (1) a relatively more elastic segment for price increases and (2) a relatively less elastic segment for price decreases. The relative elasticities of these two segments is based on the interdependent decision-making of oligopolistic firms.
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BLACK DISMALAPOD
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Today, you are likely to spend a great deal of time surfing the Internet hoping to buy either storage boxes for your computer software CDs or a set of tires. Be on the lookout for celebrities who speak directly to you through your television.
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Cyrus McCormick not only invented the reaper for harvesting grain, he also invented the installment payment for selling his reaper.
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"If you are going to achieve excellence in big things, you develop the habit in little matters. Excellence is not an exception, it is a prevailing attitude. " -- Colin Powell, general
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