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OLIGOPOLISTIC BEHAVIOR: Oligopolistic industries are nothing if not diverse. Some sell identical products, others differentiated products. Some have three or four firms of nearly equal size, others have one large dominate firm (a clear industry leader) and a handful of smaller firms (that follow the leader). Whatever products they may sell, and however they may be organized, oligopolistic industries share several behavioral tendencies, including (1) interdependence, (2) rigid prices, (3) nonprice competition, (4) mergers, and (5) collusion. In other words, each oligopolistic firm keeps a close eye on the decisions made by other firms in the industry (interdependence), are reluctant to change prices (rigid prices), but instead try to attract the competitors customers using incentives other than prices (nonprice competition), and when they get tired of competing with their competitors they are inclined to cooperate either legally (mergers) or illegally (collusion).
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DEADWEIGHT LOSS The decrease in the sum of consumer surplus and producer surplus that results from the imposition of a tax. When a tax drives a wedge between demand price and supply price it disrupts what otherwise would be an efficient market equilibrium. Inefficiency arises because while a portion of the sum of consumer and producer surplus is merely transferred to government, a portion of this sum also disappears. The part that disappears is the deadweight loss and is an indicator of the inefficiency of the tax.
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PURPLE SMARPHIN
[What's This?]
Today, you are likely to spend a great deal of time watching the shopping channel seeking to buy either a birthday greeting card for your mother that doesn't look like a greeting card or a handcrafted spice rack. Be on the lookout for bottles of barbeque sauce that act TOO innocent.
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This isn't me! What am I?
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The 1909 Lincoln penny was the first U.S. coin with the likeness of a U.S. President.
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"He who truly knows has no occasion to shout. " -- Leonardo da Vinci, painter, sculptor, architect, engineer
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JF
Journal of Finance
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