chapter8 econ

What are inflation, hyperinflation, and deflation?

Inflation is a sustained increase in the general price level. Hyperinflation is an extremely rapid and severe increase in prices. Deflation is a sustained decrease in the general price level.

How is inflation measured, and what is the CPI?

The Consumer Price Index (CPI) measures changes over time in the prices consumers pay for a representative basket of goods and services. The U.S. Bureau of Labor Statistics (BLS) collects and publishes CPI data monthly.

What problem did money solve, and what is the double coincidence of wants?

Barter requires people to exchange goods directly. The double coincidence of wants means each person must want what the other person offers at the same time. Money solves this problem by serving as a medium of exchange.

What is a medium of exchange, and why do people accept modern paper money?

A medium of exchange is something widely accepted as payment for goods and services. Modern paper money generally has little intrinsic value, but people accept it because it is trusted and widely recognized for making payments.

What is the money supply, and what is the Federal Reserve?

The money supply is the amount of money available in an economy according to the monetary measure used. The Federal Reserve is the central bank of the United States and influences monetary conditions through its policy tools.

What are open market operations, and how do Fed purchases and sales affect monetary conditions?

Open market operations are the Federal Reserve's purchases and sales of securities. Purchases add reserves to the banking system and can support lending and money creation. Sales withdraw reserves and can reduce banks' capacity to lend and create money.

What are discount loans and reserve requirements?

Discount loans are loans the Federal Reserve makes to eligible banks. Reserve requirements specify the reserves banks must hold against certain deposits in the course's model. Easier access to reserves or lower reserve requirements can support more lending, while tighter conditions can restrict it.

What is the equation of exchange, and what do its variables mean?

M × V = P × Q. M = money supply; V = velocity of money, or how frequently money is used for transactions; P = overall price level; Q = real output or quantity of goods and services.

How do you calculate the price level using the equation of exchange?

P = (M × V) ÷ Q. Multiply the money supply by velocity, then divide by real output. Example: M = $10,000, V = 4, Q = 8,000. P = ($10,000 × 4) ÷ 8,000 = $5 per item.

If the money supply increases from $10,000 to $15,000, with V = 4 and Q = 8,000, what happens to the price level?

The original price level is ($10,000 × 4) ÷ 8,000 = $5. The new price level is ($15,000 × 4) ÷ 8,000 = $7.50. The price level increases by 50% in this simplified model.

When can the money supply increase without raising the price level?

If real output increases proportionately with the money supply and velocity stays unchanged, the price level does not have to rise. Example: M rises from $10,000 to $15,000 and Q rises from 8,000 to 12,000, with V = 4. Both the original and new price levels are $5.

What is the main relationship between money supply, real output, and inflation?

If velocity and real output remain constant, increasing the money supply raises the price level in the equation-of-exchange model. If real output grows proportionately with the money supply, the price level can remain unchanged.

What is the business cycle, and what can cause a recession?

The business cycle includes expansion, peak, contraction or recession, and trough, followed by recovery. Possible causes of recession include investment bubbles, financial instability, and supply shocks. The 2007 housing collapse contributed to the severe downturn that followed, while the 1974 OPEC oil crisis contributed to economic difficulties and inflation.

What is expansionary monetary policy, and how can it help during a recession?

Expansionary monetary policy eases monetary conditions to stimulate economic activity. It can support lending, lower interest rates, and encourage borrowing, spending, and investment.

What is contractionary monetary policy, and how can it reduce inflationary pressure?

Contractionary monetary policy tightens monetary conditions to slow economic activity and inflationary pressure. Higher interest rates make borrowing more expensive and can reduce interest-sensitive spending and investment.

How do interest rates affect borrowing, home buying, and spending?

When the supply of loanable funds increases, interest rates tend to fall, all else equal. Lower rates make borrowing cheaper and can encourage mortgages, home buying, spending, and investment. Higher rates can discourage these activities.

What is the gold standard, and how does it limit money creation?

The gold standard is a monetary system in which currency is linked to a specified amount of gold. Maintaining gold convertibility constrains money creation because the government must preserve the ability to exchange currency for gold. A large gold discovery can increase the available gold supply and potentially create inflationary pressure.

What are price controls, price ceilings, and price floors?

Price controls are government-imposed limits on prices. A price ceiling is a legal maximum price; a price floor is a legal minimum price. The equilibrium price is where quantity demanded equals quantity supplied.

What happens when a price ceiling is set below equilibrium?

A below-equilibrium price ceiling creates a shortage. The lower legal price increases quantity demanded and decreases quantity supplied, so quantity demanded exceeds quantity supplied.

Why might governments impose wage and price controls, and what are their limitations?

Governments may use controls to try to limit visible price increases or make goods more affordable. However, controls can create shortages and do not necessarily address the underlying causes of inflation. If the money supply keeps growing faster than real output, inflationary pressure can persist despite price controls.

What should you know about Germany's hyperinflation and its political consequences?

Understand what hyperinflation means and how rapidly rising prices can damage money's purchasing power, savings, wages, trade, and economic stability. Your study guide does not specify the exact causes, examples, or political-party connection your instructor expects, so check those details in your lecture notes.