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SELF CORRECTION: The process through which a model, especially the market and the aggregate market, automatically adjust to equilibrium through changes in one of the variables. For the standard market, self-correction involves changes in the market price to eliminate shortages and surpluses. For the aggregate market, self-correction involves changes in wages, which shift the short-run aggregate supply curve and move the aggregate market from short-run equilibrium to long-run equilibrium.
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SIGNALLING When confronted by asymmetric information, the use of small bits of information, or indicators, that suggest more comprehensive information. Signalling is used by those with more information to reduce the cost of informing those with less information. It is commonly used in markets with adverse selection. Methods of signalling include advertising, brand names, and warranties. A related method is screening.
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ORANGE REBELOON
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Today, you are likely to spend a great deal of time at an auction seeking to buy either a remote controlled train set or a genuine down-filled snow parka. Be on the lookout for strangers with large satchels of used undergarments.
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Much of the $15 million used by the United States to finance the Louisiana Purchase from France was borrowed from European banks.
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"There are two big forces at work, external and internal. We have very little control over external forces such as tornadoes, earthquakes, floods, disasters, illness and pain." -- Leo Buscaglia, Author
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JEP
Journal of Economic Perspectives
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