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PIGOUVIAN TAX: A tax on an external cost, such as pollution, designed to use market forces to achieve an efficient allocation of resources. A. C. Pigou, one of the first economists to study the market failure of externalities, is credited with developing this tax system for internalizing costs external to the market. An external cost caused by pollution, for example, can be internalized if polluters pay a tax equal to the value of the external cost.
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ASSUMPTIONS, KEYNESIAN ECONOMICS The macroeconomic study of Keynesian economics relies on three key assumptions--rigid prices, effective demand, and savings-investment determinants. First, rigid or inflexible prices prevent some markets from achieving equilibrium in the short run. Second, effective demand means that consumption expenditures are based on actual income, not full employment or equilibrium income. Lastly, important savings and investment determinants include income, expectations, and other influences beyond the interest rate. These three assumptions imply that the economy can achieve a short-run equilibrium at less than full-employment production.
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GRAY SKITTERY
[What's This?]
Today, you are likely to spend a great deal of time going from convenience store to convenience store wanting to buy either a lighted magnifying glass or a small, foam rubber football. Be on the lookout for malfunctioning pocket calculators.
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This isn't me! What am I?
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Lewis Carroll, the author of Alice in Wonderland, was the pseudonym of Charles Dodgson, an accomplished mathematician and economist.
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"There are only two ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle." -- Albert Einstein
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JFE
Journal of Financial Economics
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