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DEMAND SHOCK: A disruption of market equilibrium (that is, a market adjustment) caused by a change in a demand determinant and a shift of the demand curve. A demand shock can take one of two forms--an Demand Increase or a Demand Decrease. An increase in demand is seen as a rightward shift of the demand curve and results in an increase in equilibrium quantity and an increase in equilibrium price. A decrease in demand is a leftward shift of the demand curve and results in a decrease in equilibrium quantity and a decrease in equilibrium price.

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SAVING-INVESTMENT MODEL

A variation of the Keynesian injections-leakages model that includes the two private sectors, the household sector and the business sector. This variation, more formally termed the two-sector injections-leakages model, captures the interaction between induced saving (and indirectly induced consumption expenditures) and autonomous investment expenditures. This model provides an alternative to the two-sector aggregate expenditures (Keynesian cross) analysis of the macroeconomy, including equilibrium, disequilibrium, and the multiplier. Equilibrium is identified as the intersection between the saving line and the investment line. Two related variations are the three-sector injections-leakages model and the four-sector injections-leakages model.

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Today, you are likely to spend a great deal of time strolling through a department store looking to buy either throw pillows for your living room sofa or a hepa filter for your furnace. Be on the lookout for bottles of barbeque sauce that act TOO innocent.
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Lewis Carroll, the author of Alice in Wonderland, was the pseudonym of Charles Dodgson, an accomplished mathematician and economist.
"When one door closes another door opens; but we do often look so long and so regretfully upon the closed door, that we do not see the ones which open for us. "

-- Alexander Graham Bell, inventor

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