Comprehensive Economics: Short-Run & Long-Run GDP, Aggregate Demand, Money Markets, and Monetary Policy

What does 'sticky' prices refer to in the short run?

Prices and wages that do not change quickly in response to demand shifts.

How do firms respond to demand shifts in the short run?

Firms scale production levels instead of changing prices.

What is the natural GDP level denoted as?

Yn, or the potential GDP level.

What happens to GDP in the medium run?

Firms can adjust prices and wages, but production is limited by current capital, labor, education, and technology.

How does the natural GDP level change in the long run?

It increases as economies enhance their capital, labor stocks, education, and technology.

What is the aggregate demand equation represented as?

Z = C + I + G + NX, where Z is aggregate demand.

What components make up aggregate demand?

Consumer goods demand (C), investment goods demand (I), government demand (G), and net foreign demand (NX).

What is the consumption function equation?

C = c0 + c1 * YD, where YD is disposable income.

What does c0 represent in the consumption function?

Baseline or 'autonomous' consumption, the minimum consumption even with zero disposable income.

What does c1 represent in the consumption function?

The marginal propensity to consume out of disposable income.

What is equilibrium GDP?

The point where total production (Y) equals total demand for goods and services (Z).

What does the 45-degree line represent in the context of equilibrium GDP?

It shows all possible equilibrium points where Z equals Y.

What is the formula for total demand (Z) in equilibrium GDP?

Z = C + I + G + NX.

What is the impact of a one-dollar increase in autonomous spending on GDP in the short run?

It would increase GDP by a factor determined by the marginal propensity to consume.

What does the term 'partial adjustment' refer to?

The gradual change in prices and wages over time in response to demand shifts.

What is the significance of the consumption function in macroeconomics?

It helps explain how disposable income affects consumer spending.

What does the term 'aggregate demand' encompass?

The total demand for goods and services in an economy at a given overall price level.

What are the determinants of private consumption (C)?

Factors such as disposable income, consumer confidence, and economic conditions.

How do fluctuations in GDP reflect economic conditions?

They indicate changes in production and consumption levels in the economy.

What is the role of government demand (G) in aggregate demand?

It represents government spending on goods and services, contributing to total demand.

What does net foreign demand (NX) include?

The difference between a country's exports and imports.

What are the implications of 'sticky' prices for economic policy?

It suggests that monetary and fiscal policies can have delayed effects on the economy.

What is the relationship between GDP and business cycles?

Changes in demand can affect GDP and contribute to fluctuations in business cycles.

What is the equation for goods market equilibrium?

Y = Z

What does Y represent in the goods market equilibrium equation?

Y represents national income or output.

What components make up the equation Y = C + I + G + NX?

Consumption (C), Investment (I), Government spending (G), and Net Exports (NX).

What is the formula for the spending multiplier?

1 / (1 - c1), where c1 is the marginal propensity to consume.

What happens to GDP when autonomous demand increases by $1?

GDP increases by the spending multiplier times the increase in demand.

How do you calculate the change in GDP from an increase in government spending?

ΔY / ΔG = 1 / (1 - c1)

What is the effect of a $1 increase in government spending on aggregate demand?

It shifts the aggregate demand curve upward, increasing GDP.

What is the relationship between production and income in the multiplier effect?

An initial increase in demand leads to increased production, which raises income.

What is the formula for aggregate demand (Z) in equilibrium?

Z = C + I + G + NX

What does the term 'sticky prices' refer to?

Prices that do not adjust quickly to changes in demand.

What is the sticky-wage theory?

Wages are locked in by contracts, preventing firms from adjusting wages quickly.

What are menu costs?

Costs incurred by firms when changing prices, contributing to sticky prices.

What is the worker-misperception theory?

Workers may not realize that the cost of living has changed, affecting wage negotiations.

What causes firms to increase production instead of prices during high demand?

Sticky prices and the desire to avoid menu costs.

What is the imperfect-information theory?

Both firms and workers misinterpret signals about inflation and adjust production incorrectly.

How is equilibrium GDP calculated?

By setting Y = Z and solving for Y.

What happens to inventories when there is an increase in demand?

Inventories decline, prompting companies to increase production.

What is the formula for national savings in the goods market equilibrium?

S = I + NX

What is the significance of the IS curve in a closed economy?

It represents the condition where investment equals savings (I = S).

What does the term 'autonomous spending' refer to?

Spending components treated as constant, independent of income.

What is the effect of a $1 increase in demand on production?

It leads to increased production, income, and further increases in demand.

What is the formula for calculating new aggregate demand after an increase in government spending?

Z' = C + I + (G + 1) + NX

What does the term 'marginal propensity to consume' (MPC) represent?

The fraction of additional income that is spent on consumption.

How does the multiplier effect lead to further increases in demand?

Each round of increased income leads to additional consumption based on MPC.

What are stock variables?

Slow-changing variables that can be treated as fixed in the near term, such as assets, liabilities, and wealth.

What is the formula for calculating wealth?

Wealth (net worth) = Assets - Liabilities.

What are flow variables?

Variables defined per unit of time that can fluctuate significantly, such as income, consumption, and savings.

How do annual inflows and outflows affect stock variables?

They gradually change stock variables, similar to water streams flowing into a lake.

What does money refer to in economics?

Liquid assets that can be easily transferred to finance transactions, primarily cash and checkable deposits.

Why are credit cards not included in the money supply?

They draw on the credit card company's checkable deposits, which are already counted.

What is the role of financial markets?

They transfer liquidity across individuals or entities, allowing those who value liquidity most to borrow from those who value it less.

What determines the equilibrium price of liquidity?

The supply and demand for liquidity determine the equilibrium price, which is the interest rate.

What happens in primary financial markets?

Lenders lend directly to borrowers, such as individuals or companies going public.

What occurs in secondary financial markets?

Lenders buy and sell securities among themselves without involving the original borrower.

What is the Money Demand Function?

It represents the relationship between the demand for money and factors like nominal GDP and the interest rate.

How is the Money Demand Function expressed mathematically?

Md = $Y * L(i), where $Y is nominal GDP and L(i) is a downward sloping function.

What is the role of a country's central bank?

To ensure liquidity, employment, and price stability, typically by managing the money supply.

What is the Federal Reserve Bank's role in the US?

It acts as the central bank, managing the money supply and targeting interest rates.

What are the four ways the Fed can change the money supply?

1) Print money, 2) Reduce the discount rate, 3) Reduce the reserve ratio, 4) Conduct expansionary open market operations.

What happens during an expansionary open market operation (OMO)?

The Fed buys bonds for money, increasing the money supply and affecting bond prices.

What is the effect of OMOs on bond interest rates?

The financial return on bonds decreases when the Fed buys bonds, lowering interest rates.

What is the significance of nominal GDP in the Money Demand Function?

It influences the dollar value of transactions that need to be financed, affecting money demand.

What does an increase in nominal GDP do to money demand?

It shifts the money demand curve up, indicating more transactions to finance.

Why does the Fed target interest rates instead of money supply?

Targeting interest rates stabilizes the economy by preventing fluctuations in money demand from destabilizing interest rates.

What is the formula for calculating the equilibrium interest rate?

Set money supply (Ms) equal to money demand (Md) and solve for the interest rate.

What is the impact of increasing the money supply on interest rates?

An increase in money supply typically lowers interest rates, making borrowing cheaper.

What is the relationship between money and bonds in the context of wealth?

Wealth can be held in various assets, including both liquid (money) and illiquid (bonds) assets.

What is the effect of reducing the reserve ratio?

It allows banks to lend more of their deposits, increasing the money supply.

What does the term 'liquidity' refer to in financial markets?

The ease with which assets can be converted into cash without affecting their market price.

What is the role of the Federal Open Market Committee (FOMC)?

To set the target interest rate and oversee open market operations.

What happens when the Fed buys bonds from commercial banks?

It increases the money supply and reduces the bond supply in the market, driving up bond prices.

What is the significance of the face value of a bond?

It is the amount the bond issuer agrees to pay the bondholder at maturity.

What are 'helicopter drops' in monetary policy?

Distributing money directly to the public to increase liquidity.

What happens to interest rates if there are more bonds available?

Interest rates tend to decrease as bond prices increase.

What is the difference between central bank money and the overall money supply?

Central bank money is cash and electronic currency issued by the Federal Reserve, while the overall money supply includes central bank money plus liquidity in checking accounts.

How does the Federal Reserve typically increase central bank money?

By buying government bonds from commercial banks.

What is the effect of banks lending out extra cash received from the Federal Reserve?

It increases the overall money supply beyond the central bank money.

What does the spending multiplier reflect?

It shows how increased demand for goods stimulates production, income, and further spending.

What does the money multiplier reflect?

It shows how bank deposits are recycled through lending.

What is the formula for the total change in money supply (ΔM) when the Fed buys bonds?

ΔM = 1/(1 - (0.9)(0.8)) = $3.57 for a $1 increase in central bank money.

What does the reserve ratio (θ) represent?

The fraction of deposits that banks must keep as reserves.

What happens to the money multiplier if the reserve ratio increases?

The money multiplier decreases as banks recycle less money.

What is the liquidity trap?

A situation where money demand falls so much that interest rates drop to zero, preventing further monetary easing.

What occurred during the liquidity trap in 2008-9?

Interest rates were lowered to nearly zero, and central banks bought government bonds to stimulate the economy.

How do central banks respond to high inflation?

By selling government bonds to decrease the supply of central bank money.

What is the federal funds rate?

The interest rate at which commercial banks lend central bank money to each other overnight.

What is the impact of a decrease in nominal GDP on money demand?

It leads to a decrease in money demand, as less money is needed for transactions.

What is unconventional monetary policy?

Actions taken by central banks beyond standard open market operations, such as buying risky assets.

What role do financial markets play in saving and investment?

They facilitate saving and investment by matching savers with borrowers.

What is the effect of a liquidity increase on overall money supply?

It leads to an increase in the overall money supply as banks lend out more money.

What happens when the cash fraction of deposits increases?

It reduces the amount of money available for banks to lend, decreasing the money multiplier.

What is the relationship between cash demand and overall money demand?

The demand for cash is a scaled-down version of the demand for overall money, which includes checkable deposits.

What is the formula for total demand for central bank money (Hd)?

Hd = [c + θ(1 - c)]Md, where c is the cash fraction and θ is the reserve ratio.

What happens to the money multiplier if the cash fraction is 0.2 and the reserve ratio is 0.1?

The money multiplier is 1/0.32, indicating how much overall money supply changes with changes in central bank money.

What does an increase in central bank money of $10 billion imply for overall money supply?

ΔM = 3.57 * $10 billion = $35.7 billion increase in overall money supply.

What is the effect of the Federal Reserve buying long-term government bonds?

It lowers long-term interest rates and encourages private lending.

What is the significance of the geometric series in the money multiplier?

It illustrates how money is recycled through the banking system, leading to a total change in money supply.