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HARROD-DOMAR MODEL: A model economic growth developed by R. F. Harrod and E. D. Domar that seeks to explain why an economy would not grow as fast has its potential growth rate. This model is based on the notion that actual income determines the amount saving, which is determines investment, which is what affects the rate of economic growth. If saving is not enough, the potential growth rate will not be achieved. The Harrod-Domar model, developed in the 1930s, has a strong Keynesian economic flavor, both indicating that the economy does not automatically achieve its potential.

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MARGINAL PROPENSITY TO INVEST

The change in business investment expenditures induced by a change in income or production (national income or gross domestic product). The marginal propensity to invest (abbreviated MPI) is another term for the slope of the investment line and is calculated as the change in investment divided by the change in income or production. The MPI plays a role in Keynesian economics. It augments the slope of the aggregate expenditures line and is part to the multiplier process. A related marginal measure is the marginal propensity to consume.

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Today, you are likely to spend a great deal of time driving to a factory outlet seeking to buy either one of those "hang in there" kitty cat posters or a velvet painting of Elvis Presley. Be on the lookout for high interest rates.
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Approximately three-fourths of the U.S. paper currency in circular contains traces of cocaine.
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