微观经济名词解释
CHAPTER 1
Scarcity:the limited nature of society’s resources.
Economics:the study of how society manages its scarce resources.
Efficiency:the property of society getting the most it can from its scarce resources.
Equity:the property of distributing economic prosperity fairly among the members of society. Opportunity cost:whatever must be given up to obtain some item. Rational people:people who systematically and purposefully do the best they can to achieve their objectives.
Marginal changes:small incremental adjustments to a plan of action. Incentive:something that induces a person to act.
Market economy:an economy that allocates resources through the decentralized decisions of many firms and households as they interact in markets for goods and services.
Property rights:the ability of an individual to own and exercise control over scarce resources. Market failure:a situation in which a market left on its own fails to allocate resources efficiently.
Externality:the impact of one person’s actions on the well-being of a bystander.
Market power:the ability of a single economic actor (or small group of actors) to have a substantial influence on market prices.
Productivity:the quantity of goods and services produced from each hour of a worker’s time. Inflation:an increase in the overall level of prices in the economy.
Business cycle:fluctuations in economic activity, such as employment and production.
CHAPTER 2
Circular-flow diagram:a visual model of the economy that shows how dollars flow through markets among households and firms. Production possibilities frontier:a graph that shows the combinations of output that the economy can possibly produce given the available factors of production and the available production technology.
Microeconomics:the study of how households and firms make decisions and how they interact in markets.
Macroeconomics:the study of economy-wide phenomena, including inflation, unemployment, and economic growth.
Positive statements:claims that attempt to describe the world as it is.
Normative statements:claims that attempt to prescribe how the world should be.
Chapter 3
Absolute advantage:the ability to produce a good using fewer inputs than another producer Opportunity cost:whatever must be given up to obtain some item
Comparative advantage:the ability to produce a good at a lower opportunity cost than another producer
Exports:goods produced domestically合乎国内的and sold abroad Imports:goods produced abroad and sold domestically
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CHAPTER 4
Market:a group of buyers and sellers of a particular good or service
Competitive market:a market in which there are many buyers and many sellers so that each has a negligible impact on the market price
Quantity demanded:the amount of a good that buyers are willing and able to purchase.
Law of demand:the claim that, other things equal, the quantity demanded of a good falls when the price of the good rises.
Demand schedule:a table that shows the relationship between the price of a good and the quantity demanded.
Demand curve:a graph of the relationship between the price of a good and the quantity demanded. Normal good:a good for which, other things equal, an increase in income leads to an increase in demand.
Inferior good:a good for which, other things equal, an increase in income leads to a decrease in demand.
Substitutes:two goods for which an increase in the price of one good leads to an increase in the demand for the other.
Complements:two goods for which an increase in the price of one good leads to a decrease in the demand for the other.
Quantity supplied:the amount of a good that sellers are willing and able to sell.
Law of supply:the claim that, other things equal, the quantity supplied of a good rises when the price of the good rises.
Supply schedule:a table that shows the relationship between the price of a good and the quantity supplied.
Supply curve:a graph of the relationship between the price of a good and the quantity supplied. Equilibrium:a situation in which the price has reached the level where quantity supplied equals quantity demanded.
Equilibrium price:the price that balances quantity supplied and quantity demanded.
Equilibrium quantity:the quantity supplied and the quantity demanded at the equilibrium price. Surplus:a situation in which quantity supplied is greater than quantity demanded. Shortage:a situation in which quantity demanded is greater than quantity supplied.
Law of supply and demand:the claim that the price of any good adjusts to bring the supply and demand for that good into balance.
CHAPTER 5
Elasticity:a measure of the responsiveness of quantity demanded or quantity supplied to one of its determinants.
Price elasticity of demand:a measure of how much the quantity demanded of a good responds to a change in the price of that good, computed as the percentage change in quantity demanded divided by the percentage change in price.
Total revenue:the amount paid by buyers and received by sellers of a good, computed as the price of the good times the quantity sold.
Income lasticity of demand: a measure of how much the quantity demanded of a good responds to a change in consumers’ income, computed as the percentage change in quantity demanded divided by the percentage change in income. Crossprice elasticity of demand: a measure of how much the quantity demanded of one good responds to a change in the price of another good, computed as the percentage change in the quantity demanded
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of the first good divided by the percentage change in the price of the second good.
Price elasticity of supply:a measure of how much the quantity supplied of a good responds to a change in the price of that good, computed as the percentage change in quantity supplied divided by the percentage change in price.
CHAPTER 6
Price ceiling:a legal maximum on the price at which a good can be sold. Price floor:a legal minimum on the price at which a good can be sold.
Tax incidence:the manner in which the burden of a tax is shared among participants in a market.
CHAPTER 7
Welfare economics:the study of how the allocation of resources affects economic well-being. Willingness to pay:the maximum amount that a buyer will pay for a good.
Consumer surplus:a buyer’s willingness to pay minus the amount the buyer actually pays. Cost:the value of everything a seller must give up to produce a good.
Producer surplus:the amount a seller is paid for a good minus the seller’s cost.
Eficiency:the property of a resource allocation of maximizing the total surplus received by all members of society.
Euity:fairness of the distribution of well-being among the members of society.
CHAPTER 10
Externality:the uncompensated impact of one person’s actions on the well-being of a bystander. Internalizing an externality:altering incentives so that people take account of the external effects of their actions. Coase theorem:the proposition that if private parties can bargain without cost over the allocation of resources, they can solve the problem of externalities on their own.
Transaction costs:the costs that parties incur in the process of agreeing and following through on a bargain.
Correct tax:a tax designed to induce decision makers to take account of the social costs that arise from a negative externality.
CHAPTER 16
Oligopoly:a market structure in which only a few sellers offer similar or identical products. Monopolistic competition:a market structure in which many firms sell products that are similar but not identical.
Collusion:an agreement among firms in a market about quantities to produce or prices to charge. Cartel:a group of firms acting in unison.
Nash equilibrium:a situation in which economic actors interacting with one another each choose their best strategy given the strategies that all the other actors have chosen. Game theory:the study of how people behave in strategic situations.
Prisoners’dilemma:a particular \"game\" between two captured prisoners that illustrates why cooperation is difficult to maintain even when it is mutually beneficial.
Dominant strategy:a strategy that is best for a player in a game regardless of the strategies chosen by the other players.
CHAPTER 19
Human capital:the accumulation of investments in people, such as education and on-the-job
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training
Union:a worker association that bargains with employers over wages, benefits, and working conditions
Strike:the organized withdrawal of labor from a firm by a union
Efficiency wages:above- equilibrium wages paid by firms to increase worker productivity Discrimination:the offering of different opportunities to similar individuals who differ only by race, ethnic group, sex, age, or other personal characteristics
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