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A PRIORI: A presumption made before an analysis is undertaken, often based on experiences, beliefs, or deductions from seemingly self-evident propositions about how the world works. This is a Latin for assumption or axiom. A similar sounding, but opposite term is a posteriori, which is derived from observation or facts. For example, in the study of economics of crime you might assume, a priori, that people are basically "good", because that just seems to be part of human nature, and conclude, a posteriori, that people are more likely to commit crimes when the threat of capture and conviction is lower.

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PRICE DISCRIMINATION: Charging different prices to different buyers for the same good. This is an age old practice for suppliers who have achieved some degree of market control, especially those with a monopoly. The reason for price discrimination, of course, is higher profit. To be a successful price discriminator you must be able to do three things--(1) have market control and be a price maker, (2) identify two or more groups that are willing to pay different prices, and (3) keep the buyers in one group from reselling the good to another group. In this way, you will be able to charge each group what they, and they alone, are willing to pay.

     See also | market control | monopoly | profit | perfect price discrimination | first-degree price discrimination | second-degree price discrimination | third-degree price discrimination | price maker |


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PRICE DISCRIMINATION, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2026. [Accessed: July 21, 2026].


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AGGREGATE EXPENDITURES DETERMINANTS

Ceteris paribus factors, other than aggregate income or production, that are held constant when the aggregate expenditures line is constructed and which cause the aggregate expenditures line to shift when they change. Some of the more important aggregate expenditures determinants are interest rates, expectations, fiscal policy, wealth, and exchange rates.

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Parker Brothers, the folks who produce the Monopoly board game, prints more Monopoly money each year than real currency printed by the U.S. government.
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