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April 16, 2024 

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LERNER INDEX: The difference between price (p) and marginal cost (mc) as a fraction of price, that is [p-mc]/p. The Lerner index is usually taken as an indicator of market power because the larger the index, the larger the difference between price and marginal cost, that is, the larger the distance between the price and the competitive price. The Lerner index depends on the elasticity of demand. The Lerner index is also called the price-cost margin.

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CHANGE IN AGGREGATE SUPPLY: A shift of the short-run or long-run aggregate supply curve caused by a change in one of the aggregate supply determinants. In essence, a change in aggregate supply is caused by any factor affecting supply EXCEPT the price level. This concept should be contrasted directly with a change in real production. You might also want to review the terms change in quantity supplied and change in supply, as well. The change in aggregate supply is comparable to the change in market supply. A change in aggregate supply is a change in ALL price level-real production combinations, meaning that each price level is matched up with a different level of real production (which is then illustrated as a shift of the short-run or long-run aggregate supply curve). This change in aggregate supply is caused by a change in any of the aggregate supply determinants. In contrast, a change in real production is a change from one price level-real production combination to the another.

     See also | aggregate supply | long-run aggregate supply curve | short-run aggregate supply curve | aggregate supply determinants | price level | real production | change in real production | change in quantity supplied | change in supply | market supply |


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CHANGE IN AGGREGATE SUPPLY, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2024. [Accessed: April 16, 2024].


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BANKS

Financial intermediaries that function as depository institutions, maintaining deposits, making loans, and directly controlling the checkable deposits portion of the economy's money supply. As financial intermediaries, banks match up lenders and borrowers, using deposits for loans. However, banks are also responsible for maintaining liquid checkable deposits that are used as money for the economy. The generic term "banks" or "commercial banks" is used in reference to traditional banks, as well as checking-account issuing thrift institutions--credit unions, savings and loan associations, and mutual savings banks.

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