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REAL PURCHASING POWER: The ability to acquire wants-and-needs satisfying goods and services with income or money. The real purchasing power of income or money depends on the prices of the goods and services. If the price level, for example, doubles, then a given amount of money can purchase half as many goods and services.

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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 at the confiscated property police auction seeking to buy either a pair of designer sunglasses or looseleaf notebook paper. Be on the lookout for mail order catalogs with hidden messages.
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The penny is the only coin minted by the U.S. government in which the "face" on the head looks to the right. All others face left.
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