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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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IMPACT LAG The time lag that occurs between the implementation of a government policy designed to correct an economic problem and the complete impact of the policy. The impact lag is based on the multiplier process and can last up to a year or two or even longer. This "outside lag" is one of four policy lags associated with monetary and fiscal policy. The other three "inside lags" are recognition lag, decision lag, and implementation lag. All four policy lags can reduce the effectiveness of business-cycle stabilization policies and can even destabilize the economy.
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Approximately three-fourths of the U.S. paper currency in circular contains traces of cocaine.
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"To succeed you need to find something to hold on to, something to motivate you, something to inspire you." -- Tony Dorsett, Football player
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MPI
Marginal Propensity to Invest
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