ECON 111 Lecture Notes - Lecture 4: Irrational Exuberance, Quantitative Easing, Federal Funds Rate

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Barter system requires a double coincidence of wants. If either side of exchange doesn"t need or want the others good they won"t trade: unit of account, store of value. Disadvantage: losing value to in ation or if its cash its sacri cing interest rate. M1: very spendable, most liquid: cash and coin, demand deposit, checking account, traveler"s checks. M2: m1 + m2, less liquid: savings accounts, saving deposits - sacri ce liquidity for interest, money markets, small time deposits (cd"s) - promise bank you won"t take this money for given time and is less than k. M3: m1 + m2 + m3, very viscous: large time deposit - more than k. The money multiplier: (the multiple expansion of demand deposits) Money multiplier = ( 1 / (required reserve ratio)) Suppose banks are required to hold 20% of deposits as reserves. Vault cash at the bank or at the fed.

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