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Econ 110 midterm 2
Mankiw Ch.10,11,13,14,15,16,17,18,22,27
63
Economics
Undergraduate 1
03/13/2013

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Term

externality

 

Definition
arises when a person engages in an activity that influences the well being of a bystander but neither pays nor receives any compensation for that effect.
Term
social cost
Definition
private costs of producers plut the costs of bystanders affected adversely or beneficially
Term
internalizing the externality
Definition
altering incentives so that people take account of the external affects of their actions
Term
positive externalities
Definition

technology spillover- the impact of one firm's research and production efforts on other firms' access to technoligical advance. 

 

industrial policy- Gov. intervention that aims to prooste technology enhancing industries

 

patent protection- gives inventors property rights over inventions for a time, gives greater incentive to conduct research to advance tech. 

Term
Command and Control Policy
Definition
government regulate behavior directly to respond to externalities
Term
market based policies
Definition
gov. provides incentives so private decision makers will chooose to solve the problem on their own.
Term
Corrective taxes and subsidies
Definition
market based policy where gov. encats taxes to deal with the effects of negative externalities. called pigovian taxes. designed to induch private decision makers to take account of the social costs that arise from a negative externality.
Term
tradable pollution permits
Definition
market based policy that gov uses to solve negative externality
Term
Coase Theorem
Definition
private solution to externality. says that private economic actors can potentially solve externalities amongst themselves by reaching a bargain in which everyone is better off and the outcome is efficient, without cost.
Term
transaction costs
Definition
costs that parties incur in the process of agreeing to nd following through on a bargain. can be the cause of not solving an externality privately.
Term
private goods
Definition

exludable and rival in consumption

ex: ice cream cones, clothing, congeste toll roads

Term
public goods
Definition

goods that are neither excldable or rival in consumption

 

ex: tornado siren, national defense, uncongested non toll roads, light house

Term
commo resource
Definition

rival in consumption but not excludable

 

ex: fish in ocean, environment, congested nontoll roads

Term
club goods
Definition

goods that are excludable but not rival in consumption

 

ex:fire protection, cable TV, uncongested toll roads. 

Term
cost- benefit analysis
Definition
a study that compares the costs and benefits to society of providing a public good
Term
industrial organization
Definition
the study of how firms' decisions about prices and quantities depend on the market conditions they face
Term
explicit costs
Definition
input costs that require outlay of money by the firm
Term
implicit costs
Definition
input costs that do not require an outlay of money by the firm.
Term
total revenue
Definition

P*Q

 

amount firm recieves for sale of its output

Term
total cost
Definition

FC+VC

 

market value of the inputs a firm uses in production

Term
profit
Definition
TR-TC
Term
economic profit
Definition
total revenue minus total cost, including both explicit and implicit costs
Term
accounting profit
Definition
total revenue minus total explicit costs
Term
production function
Definition
relationship between quantity of inputs used to make a good and the quntity of output of that good.
Term
marginal product/ marginal product of labor
Definition
the increase in output that arises from an additional unit of input
Term
diminishing marginal product
Definition
property where the marginal product of an input declines as the quantity of the input decreases.
Term
variable costs
Definition
costs that vary with the quantity of output produced
Term
average total cost
Definition
TC/Q
Term
Average fixed cost
Definition
FC/Q
Term
Average variable cost
Definition
VC/Q
Term
Marginal Cost
Definition

changeTC/ changeQ

 

increase in total cost that arises from an extra unit of production

Term
efficient scale
Definition
quantity of output that minimizes ATC
Term
economies of scale
Definition
the property where long run ATC falls as the quantity of output increases
Term
diseconomies of scale
Definition
property where long run ATC rises as the quantity increases
Term
constant returns to scale
Definition
property where long run ATC stays the same as quantity of output changes
Term
reason for economies and diseconomies of scale
Definition
Long-run ATC is falling at low levels of production because of increasing specialization and rising at high levels of production because of increasing coordination prolems
Term
competitive market
Definition
many buyers and sellers, goods offered by various sellers are the same, firms can freely enter and exit.
Term
average revenue
Definition

TR/Q

 

for all firms average revenue equals the price of the good

Term
marginal revenue
Definition

change TR/ change Q

 

the change in total revenue from an additional unit sold. for competitve firms, MR equals the price of the good. 

Term
profit maximization
Definition
maximize profit where MR=MC
Term
Shut down
Definition
P<AVC
Term
sunk cost
Definition
cost that has already been committed  and cannot be recovered.
Term
long run entering and exiting markets
Definition

Enter if P>ATC

 

Exit if P<ATC

 

the competitve firm's long-run supply curve is the portion of its marginal cost curve that lies above ATC

 

in the long run equilibrium of a competitive market with free entry and exit, firms must be operating at their efficient scale. firms that remain in the market must be making 0 economic profit. 

Term
reading profit on a graph
Definition
profit is the difference between price and ATC multiplied by the quantity.
Term
marginal firm
Definition
the firm that would exit the market if the price were any lower
Term
causes of monopoly
Definition

monopoly resources- firm owns a key resource for production

 

gov. regulation- gov givs a single firm exclusive right to produce some good or service

 

production process- single firm can produce output at a lower cost that can a large number of producers= natural monopoly- arises when there are eonomies of scale over the relevant range of output. 

Term
characteristics of monopolies
Definition

marginal revenue is always less than the price of its good.

 

In competitve markets price equals marginal cost. in monopolized market, price exceeds marginal cost. 

 

profit is between the price-- ATC*Q

 

the socially optimum quantity is equilibrium of demand and MC, monopolies rarely produce there. DWL is the triange made between D and MC

Term
oligopoly
Definition

market structure in which only a few sellers offer similar or identical proucts

 

as # of sellers rises, it looks more like a competitive market. 

 

 

Term
monopolistic competition
Definition

a market structure in which many firms sell products that are similr but not identical.

 

many sellers, product differentation, free entry and exit

 

unlike monopoly, it can not earn economic profit in the long run

 

ex: novels, movies

Term
game theory
Definition
study of how people behave in strategic situations
Term
cartel
Definition
a group of firms acting in unison
Term
Nash Equilibrium
Definition
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
Term
prisoner's dilemma
Definition
a particular "game" that illustrates why cooperation is difficult to maintain even when it is mutually beneficial
Term
dominant strategy
Definition
a strategy that is best for a player regardless of the strategies chosen by the other players
Term
factors of prodution
Definition
the inputs used to produce goods and services
Term
value of the marginal product
Definition

marginal product of that input multiplied by the market price of the output.

 

firms hire until the point where the value of the marginal product of labor = wage

Term
moral hazard
Definition
the tendency of a person who is imperfectly monitored to engage in dishonest or otherwise undesirable behavior
Term
agent
Definition
a person who is performing an act for another person, called the principal
Term
principal
Definition
a person for whom another person, called the agent, is performing some act
Term
adverse selection
Definition

the tendency for the mix of unobserved attributes to become undesirable from the standpoint of an uninformed party. 

 

ex: the seller knows more about the good than the buyer like a used car salesman. 

Term
signaling
Definition

an action taken by an informed party to reveal private information to an uninformed party

 

ex: advertising

Term
screening
Definition

an action taken by an uninformed party to induce an informed party to reveal information

 

ex:insurance policies with different amount premiums

Term
risk aversion
Definition
a dilike of uncertainty
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