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SAVING-INVESTMENT MODEL: A model used to identify equilibrium in Keynesian economics based on injections (investment, I) and leakages (saving, S) for the two basic sectors (household and business). Equilibrium is achieved at the intersection of the saving line, S, and the investment line, I.

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ADVERSE SELECTION

An inefficient, bad, or adverse outcome of a market exchange that results because buyers and/or sellers make decisions based on asymmetric information. This commonly results in a market that exchanges a lesser quality good, what is termed the market for lemons. Two related problems resulting from asymmetric information are moral hazard and the principal-agent problem. Two methods of lessoning the problem of adverse selection are signalling and screening.

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APLS

BLACK DISMALAPOD
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Today, you are likely to spend a great deal of time waiting for visits from door-to-door solicitors wanting to buy either a how-to book on home repairs or a large, stuffed kitty cat. Be on the lookout for jovial bank tellers.
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The 22.6% decline in stock prices on October 19, 1987 was larger than the infamous 12.8% decline on October 29, 1929.
"In the long run men hit only what they aim at. "

-- Henry David Thoreau, philosopher

CAPM
Capital Asset Pricing Model
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