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OLIGOPOLY, REALISM: Real world markets are heavily populated by oligopoly. About half of all output produced in the U.S. economy each year is done so by oligopoly firms. Other industrialized nations can make a similar claim. Oligopoly markets arise in a wide assortment different industries, ranging from manufacturing to retail trade to resource extraction to financial services.

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ADVERSE SELECTION

An inefficient, bad, or adverse outcome of a market exchange that results because buyers and/or sellers make decisions based on asymmetric information. This commonly results in a market that exchanges a lesser quality good, what is termed the market for lemons. Two related problems resulting from asymmetric information are moral hazard and the principal-agent problem. Two methods of lessoning the problem of adverse selection are signalling and screening.

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Today, you are likely to spend a great deal of time strolling through a department store trying to buy either a travel case for you toothbrush or a looseleaf notebook binder. Be on the lookout for telephone calls from long-lost relatives.
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Sixty percent of big-firm executives said the cover letter is as important or more important than the resume itself when you're looking for a new job
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