final Flashcards
externality
side effect on third party whose interest aren’t fully taken into account
- lead to market failure
negative externality
side effects that harms bystanders
- ex: car exhaust harm bystander who breathe it in
positive externality
side effect that benefit bystanders
- ex: you decide to get covid vaccine
(that decisions protect you and your classmate
private interest
cost n benefits you personally incur
- if ur choices dont affect others, private interest correspond w society
society interest
all cost n benefits, where they accrue to you or others
marginal private cost
seller extra cost to produce 1 more
(supply curve)
marginal external cost
extra cost imposed on bystanders from producing 1 more
external cost
cost seller impose on bystanders
marginal social cost
all marginal cost
marginal social cost = marginal private cost + marginal external cost
marginal private benefits
Buyer extra benefit from buying 1 more
(demand curve)
marginal external benefits
extra benefits enjoyed by bystanders from 1 more
marginal social benefits
all marginal benefits
marginal social benefits = marginal private benefits + marginal external benefits
socially optimal quantity
quantity that’s most efficient for society as a whole
rational rule for society
produce 1 more as long as marginal social benefit > marginal social cost
steps to analyze externalities
- predict equilibrium quantity to forecast what you think will happen
- asses what externalities are involves
- find socially optimal quantity
- compare equilibrium w socially optimal quantity
SOLUTION 1
solve externality problems
private bargaining & coase theorem
coase theorem
if bargain is costless & property rights are established, then external problems is solved by private bargain
SOLUTION 2
solve externality problems
corrective taxes & subsidies
corrective taxes
design to induce ppl to take account of negative externalities they cause
- set corrective taxes = to marginal external cost
-fix negative externalities
corrective subsidy
design to induce people to take account of positive externalities
- set subsidy = to marginal external benefit
SOLUTION 3
solve externality problems
cap & trade
- CAP (quota) negative externalities using quantity regulation
- increase efficiency by allowing TRADES
cap and trade proposal
Company have a cap on pollution permit (how much pollution they can produce). If they use little pollution permit, they can trade the extra permit to other company
SOLUTION 4
solve externality problems
laws, rules, and regulations
SOLUTION 5
solve externality problems
government support public goods
SOLUTION 6
solve externality problems
assign ownership rights for common resources problem
common resources
goods that are rival but nonexcludable
- lead to tragedy of the commons
- ex: fish, water, air
tragedy of the commons
tendency to overconsume a common resources
- assigning ownership rights SOLVE it
nonexcludable
goods that cant exclude a person from using it
non rival
can be enjoyed or used by many people at the same time
- free-rider problem
free-ride problem
enjoy benefits of a good w/out bearing cost
rival good
can only be used by 1 person
- no free rider problem
public good
nonrival good that is nonexcludable
- free rider problem
- market underproduce public goods
club goods
excludable, but nonrival good
- goods that u have to pay for
You can be prevented from using it but you using it does not reduce the availability for another person
Ex: Spotify, toll road, etc
labor demand (employers)
wage ↓ demand for labor ↑
(owner want to hire more worker when its low wage)
marginal product of labor
extra production occur from hiring 1 extra worker
marginal cost
(Marginal product of labor)
↑ from hiring 1 more
marginal benefit
(Marginal product of labor)
extra revenue from the addition of 1 more
marginal revenue product
measure marginal revenue from hiring 1 more
marginal revenue product = marginal product of labor x price
rational rule for employers
hire 1 more if marginal revenue product > wage
labor demand shift 1
changes in demand for your product
derived demand
Demand for a good increase because demand for a related good increase
Ex: demand for wood and steel increase (input) because of the increase demand for house
labor demand shift 2
changes in price of physical capital
scale effect
Price of capital good↓ which mean business can produce more quantity which↑ demand for workers bcuz they require more workers
- scale effect dominate = labor n capital are compliments
( increase quantity require more workers to sells those)
substitution effect
(Labor demand)
machine price ↓ demand for worker ↓
- substitute effect dominate = labor n capital are substitute
(machine price ↓ they want less worker cuz machine take over)
labor demand shift 3
better management & productivity gains
- improve management & technology ↑ productivity
(meaning worker produce more) - labor demand
↑ worker marginal product = ↑
labor demand
labor demand shift 4
nonwage benefit, subsidies, & taxes
- these r extra cost
labor supply
wage increase, more ppl want to work
rational rules for workers
work 1 more hr if wage > marginal benefit of another hr of leisure
Substitution effect
( sub vs income effect)
describe how people respond to relative price change
↑ wage ↑ incentive to work
individual labor supply
allocating ur time between labor n leisure
- opportunity cost of working is the things you can do when ur not workings