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SIMPLE EXPENDITURE MULTIPLIER: The ratio of the change in aggregate output (or gross domestic product) to an autonomous change in an aggregate expenditure (consumption expenditures, investment expenditures, government purchases, or net exports) when consumption is the only induced expenditure. This is the least complicated expenditure multiplier possible, based exclusively on induced consumption, and is the inverse of the marginal propensity to save. This simple multiplier becomes more complicated by adding other induced expenditures.
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SHORT RUN, MACROECONOMICS In terms of macroeconomic analysis, especially the aggregate market (AS-AD) analysis, a period of time in which some prices, notably wages, are rigid, inflexible, or otherwise in the process of adjusting. This is one of two macroeconomic time designations; the other is the long run. Short-run wage and price rigidity prevents some markets, especially resource markets and most notably labor markets, from achieving equilibrium. Wage and price rigidity and the resulting resource market imbalances are the source of the positively-sloped short-run aggregate supply curve.
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In the early 1900s around 300 automobile companies operated in the United States.
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"Concentrate all your thoughts upon the work at hand. The sun's rays do not burn until brought to a focus." -- Alexander Graham Bell, inventor
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AER
American Economic Review
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