Overview
The transcript explains the functions, types, and measures of money, contrasting barter with monetary systems and detailing M0, M1, and M2.
Barter and Transaction Costs
- Barter trades goods and services for other goods and services.
- Requires a mutual coincidence of wants between trading partners.
- Searching for matches raises transaction costs significantly.
- Money emerged to reduce these transaction costs.
Functions of Money
- Medium of exchange: Lowers transaction costs compared to barter.
- Unit of account (standard of value): Prices and values are stated in dollars.
- Store of value: Preserves purchasing power over time, though inflation erodes it.
Unit of Account Examples
- Price tags allow easy comparison of fruits and clothing.
- A $22,000 car suggests low quality; a $60,000 car suggests high quality.
- Shared dollar values create common understanding of worth.
Store of Value and Inflation
- Selling perishable goods converts fragile value into more durable dollars.
- Inflation reduces money’s purchasing power over time.
- Federal Reserve targets 2% inflation, implying about 2% value loss yearly.
Types of Money: Commodity, Representative, Fiat
- Commodity money: Medium has intrinsic value (livestock, wheat, cowry shells, gold).
- Representative money: Currency backed by a commodity (e.g., gold certificates).
- Fiat money: No intrinsic value or commodity backing; value from acceptance and government backing.
Fiat Money and Legal Tender
- Modern economies use fiat money, including the United States.
- Value arises from its use to buy goods and services and government backing.
- U.S. dollars state they are legal tender for all debts, public and private.
Measures of the Money Supply
- Monetary base (M0): Bank reserves plus currency (coins and paper).
- M1 money supply: Currency, checkable deposits, and savings deposits.
- M2 money supply: M1 plus small time deposits and money market mutual funds.
Money Supply Structure and Overlaps
- Bank reserves are in M0 but are not money; not a medium of exchange.
- Currency is in both M0 and M1; it is money used for transactions.
- Checkable and savings deposits are in M1 but not in M0.
- M2 includes all of M1 plus near money that can be easily converted.
Money Measures Summary Table
| Measure | Includes | Excludes | Role in Transactions |
|---|
| M0 (Monetary base) | Bank reserves; currency (coins and paper) | Checkable deposits; savings deposits; small time deposits; money market mutual funds | Currency portion is used directly; reserves are not money |
| M1 | Currency; checkable deposits; savings deposits | Bank reserves; small time deposits; money market mutual funds | Primary medium of exchange in the economy |
| M2 | All of M1; small time deposits; money market mutual funds | Bank reserves beyond currency; other nonlisted assets | Includes near money easily converted for spending |
Key Terms & Definitions
- Barter: Direct exchange of goods and services without money.
- Mutual coincidence of wants: Each trader has what the other wants.
- Transaction costs: Costs of making an exchange, including search and negotiation.
- Medium of exchange: Asset accepted for purchasing goods and services.
- Unit of account: Common measure used to set prices and record value.
- Store of value: Asset that preserves value over time.
- Inflation: General rise in prices that reduces purchasing power.
- Commodity money: Money with intrinsic value as a good.
- Representative money: Money redeemable for a commodity.
- Fiat money: Money with value from acceptance and government backing.
- Monetary base (M0): Bank reserves plus currency.
- M1: Currency, checkable deposits, and savings deposits.
- M2: M1 plus small time deposits and money market mutual funds.
- Near money: Assets not immediately spendable but easily converted to money.
Action Items / Next Steps
- Distinguish M0, M1, and M2 contents and their roles.
- Explain the three functions of money with examples.
- Contrast commodity, representative, and fiat money in definitions and uses.