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I: The standard abbreviation for investment expenditures by the business sector, especially when used in the study of macroeconomics. This abbreviation is most often seen in the aggregate expenditure equation, AE = C + I + G + (X - M), where C, G, and (X - M) represent expenditures by the other three macroeconomic sectors, household, business, and foreign.

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CIRCULAR FLOW

A model of the continuous movement of production, income, and the services of scarce resources that flow between producers and consumers. In particular, the circular flow is a model of the continuous production and consumption interaction among the four major sectors of the macroeconomy--household, business, government, and foreign--using the three macroeconomic markets--product, resource, and financial. The circular flow model provides a easy way of getting the "big picture" and of seeing how the key parts of the macroeconomy fit together.

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APLS

BEIGE MUNDORTLE
[What's This?]

Today, you are likely to spend a great deal of time browsing through a long list of dot com websites wanting to buy either a cross-cut paper shredder or a birthday greeting card for your father. Be on the lookout for malfunctioning pocket calculators.
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This isn't me! What am I?

Lewis Carroll, the author of Alice in Wonderland, was the pseudonym of Charles Dodgson, an accomplished mathematician and economist.
"In a restless, creative business with an emphasis on experiment and development, ideas are the lifeblood."

-- Richard Branson, Virgin Group founder

JF
Journal of Finance
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