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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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DEMAND DETERMINANTS

Five ceteris paribus factors that affect demand, but which are assumed constant when a demand curve is constructed. They are buyers' income, buyers' preferences, other prices, buyers' expectations, and number of buyers. Changes in the demand determinants cause shifts of the demand curve and disruptions of the market.

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GREEN LOGIGUIN
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Today, you are likely to spend a great deal of time watching infomercials seeking to buy either a coffee cup commemorating Thor Heyerdahl's Pacific crossing aboard the Kon-Tiki or a rechargeable battery for your cell phone. Be on the lookout for empty parking spaces that appear to be near the entrance to a store.
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During the American Revolution, the price of corn rose 10,000 percent, the price of wheat 14,000 percent, the price of flour 15,000 percent, and the price of beef 33,000 percent.
"Well done is better than well said. "

-- Benjamin Franklin, statesman, inventor

MU
Marginal Utility
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