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Key Terms
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Below are the key terms featured in this chapter. The textbook's full glossary is also available for online searching.


aggregate demand  the relationship between the general price level and total spending in the economy
(See page(s) 247)
aggregate demand curve  the relationship between the general price level and total spending in the economy expressed on a graph
(See page(s) 247)
aggregate demand factors  variables that cause changes in total expenditures at all price levels
(See page(s) 248)
aggregate demand schedule  the relationship between the general price level and total spending in the economy expressed in a table
(See page(s) 247)
aggregate supply  the relationship between the general price level and real output produced in the economy
(See page(s) 254)
aggregate supply curve  the relationship between the general price level and real output expressed on a graph
(See page(s) 254)
aggregate supply factors  variables that change total output at all price levels
(See page(s) 255)
aggregate supply schedule  the relationship between the general price level and real output expressed in a table
(See page(s) 254)
business cycle  the cycle of expansions and contractions in the economy
(See page(s) 266)
contraction  a sustained fall in real output of an economy
(See page(s) 266)
decrease in aggregate demand  a decrease in total expenditures at all price levels
(See page(s) 248)
depression  a particularly long and harsh period of reduced real output
(See page(s) 267)
exchange rate  the value of one nation's currency in terms of another currency
(See page(s) 252)
expansion  a sustained rise in real output of an economy
(See page(s) 266)
foreign trade effect  with changes in the price level, expenditures on imports change in the same direction, while expenditures on exports change in the opposite direction
(See page(s) 248)
increase in aggregate demand  an increase in total expenditures at all price levels
(See page(s) 248)
inflationary gap  the amount by which equilibrium output exceeds potential output
(See page(s) 262)
injections  additions to an eco-nomy's income-spending stream
(See page(s) 260)
injections-withdrawals approach  an approach to deriving equilibrium GDP that focuses on total injections and total withdrawals
(See page(s) 274)
investment demand  the relationship between interest rates and investment
(See page(s) 251)
investment demand curve  the relationship between interest rates and investment expressed on a graph
(See page(s) 251)
investment demand schedule  the relationship between interest rates and investment expressed in a table
(See page(s) 251)
long-run decrease in aggregate supply  a decrease in total and potential output at all price levels
(See page(s) 255)
long-run increase in aggregate supply  an increase in total and potential output at all price levels
(See page(s) 255)
marginal propensity to save (MPS)  the effect on saving of a change in income
(See page(s) 273)
negative unplanned investment  an unintended decrease in inventories; a shortage
(See page(s) 260)
peak  the point in the business cycle at which real output is at its highest
(See page(s) 267)
positive unplanned investment  an unintended increase in inventories; a surplus
(See page(s) 260)
real expenditures  total spending in an economy, adjusted for changes in the general price level
(See page(s) 247)
real rate of return  constant-dollar extra profit provided by a project each year stated as a percentage of the project's initial cost
(See page(s) 250)
recession  a decline in real output that lasts for six months or more
(See page(s) 267)
recessionary gap  the amount by which equilibrium output falls short of potential output
(See page(s) 262)
short-run decrease in aggregate supply  a decrease in total output at all price levels, with no change in potential output
(See page(s) 255)
short-run increase in aggregate supply  an increase in total output at all price levels, with no change in potential output
(See page(s) 255)
spending-output approach  an approach to deriving equilibrium GDP that focuses on total expenditures and total output
(See page(s) 274)
trough  the point in the business cycle at which real output is at its lowest
(See page(s) 267)
wealth effect  with changes in the price level, the real value of households' financial assets changes, causing households to adjust their spending
(See page(s) 248)
withdrawals  deductions from an economy's income-spending stream
(See page(s) 260)







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