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*noun*; in Keynesian economics, the rate at which aggregate consumption rises in response to a rise in national income.
For example, suppose the marginal propensity to consume (MPC) is 0.95. If the national income is 100 billion dollars, and it rises 10%, then consumption will rise by 9.5 billion, and saving will rise by 0.5 billion.
If this theory is correct, then an expanding economy will suffer insufficient demand for its own output, and a recession will be inevitable.
This is why national governments respond to recessions with deficit spending: they are trying to counteract the MPC's effect on aggregate demand, and bring it in line with potential output.
For example, suppose the marginal propensity to consume (MPC) is 0.95. If the national income is 100 billion dollars, and it rises 10%, then consumption will rise by 9.5 billion, and saving will rise by 0.5 billion.
If this theory is correct, then an expanding economy will suffer insufficient demand for its own output, and a recession will be inevitable.
This is why national governments respond to recessions with deficit spending: they are trying to counteract the MPC's effect on aggregate demand, and bring it in line with potential output.
Not only is the marginal propensity to consume weaker in a wealthy community, but, owing to its accumulation of capital being already larger, the opportunities for further investment are less attractive...
J.M. Keynes, *The General Theory of Employment, Interest, and Money* (1936), Ch.3
J.M. Keynes, *The General Theory of Employment, Interest, and Money* (1936), Ch.3
by Abu Yahya March 3, 2009
Get the marginal propensity to consume mug.*noun*; a concept central to the idea of Keynesian economics. Under this theory, business cycles (recessions, depressions, booms, recoveries) are caused by a failure of total demand across the entire economy to match total output.
Aggregate demand is not merely influenced by people's ability to buy what they produce; it is also influenced by the marginal propensity to consume (MPC). If the MPC is less than 1, then an increase in national income will be matched by a smaller increase in aggregate demand, causing unemployment to rise and prices to fall.
Aggregate demand is not merely influenced by people's ability to buy what they produce; it is also influenced by the marginal propensity to consume (MPC). If the MPC is less than 1, then an increase in national income will be matched by a smaller increase in aggregate demand, causing unemployment to rise and prices to fall.
...When we say that the expectation of an increased demand, i.e. a raising of the aggregate demand function, will lead to an increase in aggregate output, we really mean that the firms, which own the capital equipment, will be induced to associate with it a greater aggregate employment of labour
J.M. Keynes, *The General Theory of Employment, Interest, and Money* (1936), Ch.4
J.M. Keynes, *The General Theory of Employment, Interest, and Money* (1936), Ch.4
by Abu Yahya March 3, 2009
Get the aggregate demand mug.*noun*; a method of representing the economy as the sum of many identical individuals and firms, each represented by a system of mathematical equations. The Rational Expectations Hypothesis (REH) takes its name from the premise that economic actors, i.e., everyone, do not make consistent errors about the present or future behavior of markets.
REH was devised mainly as a rebuke to Keynesian economics, and in particular, the strategy of fiscal policy or monetary policy.
According to the REH, fiscal policy does not alter aggregate demand because the "average" person recognizes that her lifetime income is not increasing--so she needs to save rather than spend the stimulus money, in anticipation of higher taxes in the future.
At the same time, monetary policy does not work because it relies on lowering interest rates to make more money available; more money means inflation, but people have to be deceived into thinking prices for their product are going up, so they will expand production. According to REH, people or firms will figure this out, and see increased demand as mere inflation. Instead of increasing output and employment, they'll want to raise prices so they can meet their future bills.
According to REH, both monetary and fiscal policy rely on illusions to work; and since people (on average) will make rational estimates o the future, they will defeat these illusions.
REH was devised mainly as a rebuke to Keynesian economics, and in particular, the strategy of fiscal policy or monetary policy.
According to the REH, fiscal policy does not alter aggregate demand because the "average" person recognizes that her lifetime income is not increasing--so she needs to save rather than spend the stimulus money, in anticipation of higher taxes in the future.
At the same time, monetary policy does not work because it relies on lowering interest rates to make more money available; more money means inflation, but people have to be deceived into thinking prices for their product are going up, so they will expand production. According to REH, people or firms will figure this out, and see increased demand as mere inflation. Instead of increasing output and employment, they'll want to raise prices so they can meet their future bills.
According to REH, both monetary and fiscal policy rely on illusions to work; and since people (on average) will make rational estimates o the future, they will defeat these illusions.
The rational expectations hypothesis states that we can break the realization of a return into an expected return that depends on the current information set and an unexpected component that depends only on new information.
by Abu Yahya March 3, 2009
Get the rational expectations hypothesis mug.*noun*, efforts by the government to intentionally run a deficit in order to stimulate the economy during a recession. Loosely associated with Keynesian economics.
According to basic economic theory, recessions occur because there is a basic mismatch between aggregate demand and potential output. One approach for solving this is for the government to buy more goods and services than it has revenues to cover, thereby creating conditions in which effective demand is greater than the stock of goods currently in business inventory (given recessionary prices).
Under a stimulus, the jolt of extra money in circulation creates inflation, which has the effect of lowering real prices. Customers then respond to the {de facto} price reduction by buying more, which leads to more hiring, thence to more effective demand, thence to economic recovery.
Another reason fiscal policy stimulates the economy is that the private sector is not investing or consuming its own output. Increased taxes would simply reduce private consumption, so those cannot be increased; but spending is increased to fill the breach.
According to basic economic theory, recessions occur because there is a basic mismatch between aggregate demand and potential output. One approach for solving this is for the government to buy more goods and services than it has revenues to cover, thereby creating conditions in which effective demand is greater than the stock of goods currently in business inventory (given recessionary prices).
Under a stimulus, the jolt of extra money in circulation creates inflation, which has the effect of lowering real prices. Customers then respond to the {de facto} price reduction by buying more, which leads to more hiring, thence to more effective demand, thence to economic recovery.
Another reason fiscal policy stimulates the economy is that the private sector is not investing or consuming its own output. Increased taxes would simply reduce private consumption, so those cannot be increased; but spending is increased to fill the breach.
I think it is possible that fiscal policy will have even more 'oomph' in this situation," Christina Romer, who heads the Council of Economic Advisers, told an economics conference.
"When households and businesses are liquidity-constrained by reduced lending, any money put in their pockets is more likely to be spent," she said.
--Reuters, "White House's Romer: Stimulus may pack more punch" (3 March 2009)
"When households and businesses are liquidity-constrained by reduced lending, any money put in their pockets is more likely to be spent," she said.
--Reuters, "White House's Romer: Stimulus may pack more punch" (3 March 2009)
by Abu Yahya March 3, 2009
Get the fiscal policy mug.*noun*; the tendency for the public to want to hold income in cash relative to its willingness to hold it as interest-bearing savings (bonds).
The liquidity preference is analogous to a supply curve for lendable funds. If the price for lendable funds--that is to say, the interest rate--is high, then the amount be be large. If the interest rate is low, then the public will be more inclined to hoard income as cash.
Income held as cash is not spent on goods and services, so if the amount increases abruptly then there will be a recession. If it is held in some interest-bearing form, then it can be spent on fixed capital, thereby increasing output and employment.
During a recession, if the liquidity preference is high, a lot of money is going to be held as cash. One could free up some cash for job-creating investment by raising interest rates, but that would eradicate a lot of business opportunities. So monetary authorities monetize debt instead, creating a new supply of credit to replace the savings lost by falling interest rates.
The liquidity preference is analogous to a supply curve for lendable funds. If the price for lendable funds--that is to say, the interest rate--is high, then the amount be be large. If the interest rate is low, then the public will be more inclined to hoard income as cash.
Income held as cash is not spent on goods and services, so if the amount increases abruptly then there will be a recession. If it is held in some interest-bearing form, then it can be spent on fixed capital, thereby increasing output and employment.
During a recession, if the liquidity preference is high, a lot of money is going to be held as cash. One could free up some cash for job-creating investment by raising interest rates, but that would eradicate a lot of business opportunities. So monetary authorities monetize debt instead, creating a new supply of credit to replace the savings lost by falling interest rates.
...An individual’s liquidity preference is given by a schedule of the amounts of his resources, valued in terms of money or of wage-units, which he will wish to retain in the form of money....
John M. Keynes, *General Theory of Employment, Interest, and Money* (1936), Ch.13
John M. Keynes, *General Theory of Employment, Interest, and Money* (1936), Ch.13
by Abu Yahya March 3, 2009
Get the liquidity preference mug.*noun*, term used in economics to refer to the New Classical economics. The fresh water school was lead by Robert E. Lucas, Thomas J. Sargent, and Robert Barro; its position was that fiscal policy and monetary policy are doomed to be ineffective, since they rely on "fooling the public."
Instead, they argued that even tax cuts had no stimulus effect (in contrast to "supply side economics"), and of course they were resolutely opposed to government spending. Instead, the fresh water school maintained that a recession was caused by markets adjusting to a technology shock to create a structurally different economic system. The best thing to do was to allow the markets to restructure industry on their own.
The fresh water school was known for their support of the "rational expectations hypothesis" (REH) and "real business cycle" (RBC) theory.
Instead, they argued that even tax cuts had no stimulus effect (in contrast to "supply side economics"), and of course they were resolutely opposed to government spending. Instead, the fresh water school maintained that a recession was caused by markets adjusting to a technology shock to create a structurally different economic system. The best thing to do was to allow the markets to restructure industry on their own.
The fresh water school was known for their support of the "rational expectations hypothesis" (REH) and "real business cycle" (RBC) theory.
But lately, a ...school of skeptics who think the Government usually just gums things up is gaining attention and influence. The skeptics are known as the "fresh water school," less for the purity of their thought than for their origins at universities along the shores of the Great Lakes.
"'Fresh Water' Economists Gain," *New York Times*, 23 July 1988
"'Fresh Water' Economists Gain," *New York Times*, 23 July 1988
by Abu Yahya March 5, 2009
Get the fresh water school mug.*noun*; a subdivision of economics that focuses on addressing recessions by stimulating supply, rather than demand. During a recession, supply siders recommend cutting taxes rather than increasing government spending.
"Supply side" is in contrast to traditional practitioners of Keynesianism, "demand siders" who believe the main fiscal policy tool for recessions should be increased government spending.
Both supply siders and demand siders believe the government is responsible for formulating effective fiscal policy during recessions.
The most famous advocate of supply side economics was Arthur Laffer.
"Supply side" is in contrast to traditional practitioners of Keynesianism, "demand siders" who believe the main fiscal policy tool for recessions should be increased government spending.
Both supply siders and demand siders believe the government is responsible for formulating effective fiscal policy during recessions.
The most famous advocate of supply side economics was Arthur Laffer.
When Ronald Reagan ...promised to cut taxes ...he claimed tax revenue would go up, not down... as the economy boomed in response to lower rates. Since then, supply side economics ... has become a central tenet of Republican political and economic thinking in the country.
"McCain sticks to Supply Side Economics..." *International Herald Tribune* (24 March 2008)
"McCain sticks to Supply Side Economics..." *International Herald Tribune* (24 March 2008)
by Abu Yahya March 5, 2009
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