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ABILITY-TO-PAY PRINCIPLE: A principle of taxation in which taxes are based on the income or resource-ownership ability of people to pay the tax. The income tax collected by our friends at the Internal Revenue Service is one of the most common taxes that seeks to abide by the ability-to-pay principle. In theory, the income tax system is set up such that people with greater incomes pay more taxes. Proportional and progressive taxes follow this ability-to-pay principle, while regressive taxes, such as sales taxes and Social Security taxes, don't.

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AGGREGATE SUPPLY DETERMINANTS

An assortment of ceteris paribus factors that affect short-run and long-run aggregate supply, but which are assumed constant when the short-run and long-run aggregate supply curves are constructed. Changes in any of the aggregate supply determinants cause the short-run and/or long-run aggregate supply curves to shift. While a wide variety of specific ceteris paribus factors can cause the aggregate supply curves to shift, they are commonly grouped into three broad categories--resource quantity, resource quality, and resource price.

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Today, you are likely to spend a great deal of time at an auction wanting to buy either a 50 foot extension cord or a combination CD player, clock radio, and telephone (with answering machine). Be on the lookout for cardboard boxes.
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Okun's Law posits that the unemployment rate increases by 1% for every 2% gap between real GDP and full-employment real GDP.
"Stand up to your obstacles and do something about them. You will find that they haven't half the strength you think they have."

-- Norman Vincent Peale

JPE
Journal of Political Economy
A PEDestrian's Guide
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