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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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INCENTIVE

A cost or benefit that motivates a resource allocation decision or other action by consumers, businesses, or other participants in the economy. Incentives can be monetary or nonmonetary. A few of the more important incentives affecting economic decisions are prices, taxes, and government regulations.

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Today, you are likely to spend a great deal of time at a garage sale hoping to buy either a coffee cup commemorating the 1960 Presidential election or a how-to book on fixing your computer, with illustrations. Be on the lookout for jovial bank tellers.
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The average bank teller loses about $250 every year.
"The less secure a man is, the more likely he is to have extreme prejudices. "

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