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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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PERFECT COMPETITION, SHORT-RUN PRODUCTION ANALYSIS A perfectly competitive firm produces the profit-maximizing quantity of output that equates marginal revenue and marginal cost. This production level can be identified using total revenue and cost, marginal revenue and cost, or profit. Because a perfectly competitive firm faces a perfectly elastic demand curve, it efficiently allocates resources by equating price and marginal cost. In addition, the marginal cost curve above the average variable cost curve is the perfectly competitive firm's short-run supply curve.
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BROWN PRAGMATOX
[What's This?]
Today, you are likely to spend a great deal of time searching the newspaper want ads hoping to buy either any book written by Stephan King or a T-shirt commemorating next Thursday. Be on the lookout for letters from the Internal Revenue Service.
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This isn't me! What am I?
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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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"In every man's life there lies latent energy. There is, however, a spark that, if kindled, will set the whole being afire, and he will become a human dynamo, capable of accomplishing almost anything to which he aspires. " -- James Cash Penney, retailer
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OCC
Office of the Comptroller of the Currency
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