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IDENTIFICATION LAG: In the context of economic policies, the time between a shock to the economy and realization that the shock has occurred. This is one of several policy lags that limit the effectiveness of stabilization policies designed to correct business-cycle fluctuations. This is also one of two inside lags. The other is an implementation lag. Also termed recognition lag, the identification lag emerges due to the time needed to measure economic activity. While the lag is generally positive, it actually can be negative through accurate forecasting techniques. When negative policies can be undertaken to correct a problem before it occurs.

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OLIGOPOLY: A market structure dominated by a small number of large firms, selling either identical or differentiated products, and significant barriers to entry into the industry. This is one of four basic market structures. The other three are perfect competition, monopoly, and monopolistic competition.

     See also | market structure | firm | industry | oligopoly characteristics | oligopolistic behavior | market control | product differentiation | barrier to entry | concentration ratio | merger | nonprice competition | collusion | cartel | monopoly | monopolistic competition | oligopsony | antitrust laws | technology | economic growth |


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OLIGOPOLY, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2025. [Accessed: December 8, 2025].


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SCREENING

When confronted by asymmetric information, the use of small bits of information, or indicators, that suggest more comprehensive information. Screening occurs when those with limited information try to identify indicators suggesting more complete information. It is used in markets with adverse selection and moral hazard, especially in labor markets and in the provision of insurance. Common methods of screening include aptitude tests, affiliations, past behavior, and personal characteristics. A related method is signalling.

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Today, you are likely to spend a great deal of time looking for the new strip mall out on the highway looking to buy either a really, really exciting, action-filled video game or a coffee cup commemorating the moon landing. Be on the lookout for attractive cable television service repair people.
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Junk bonds are so called because they have a better than 50% chance of default, carrying a Standard & Poor's rating of CC or lower.
"If you don't know where you are going, any road will get you there."

-- Lewis Carroll, writer

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