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MARGINAL PROPENSITY FOR GOVERNMENT PURCHASES: The proportion of each additional dollar of national income that is used for government purchases. Or alternatively, this is the change in government purchases due to a change in national income. Abbreviated MPG, the marginal propensity for government purchases is the slope of the government purchases line used in the analysis of Keynesian economics. As such, it also plays a role in the slope of the aggregate expenditure line and the multiplier effect.
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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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The word "fiscal" is derived from a Latin word meaning "moneybag."
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"I learned about the strength you can get from a close family life. I learned to keep going, even in bad times. I learned not to despair, even when my world was falling apart. I learned that there are no free lunches. And I learned the value of hard work. " -- Lee Iacocca
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IS-LM
Investment/Saving-Liquidity/Money
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