final Flashcards

1
Q

externality

A

side effect on third party whose interest aren’t fully taken into account

  • lead to market failure
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2
Q

negative externality

A

side effects that harms bystanders

  • ex: car exhaust harm bystander who breathe it in
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3
Q

positive externality

A

side effect that benefit bystanders

  • ex: you decide to get covid vaccine
    (that decisions protect you and your classmate
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4
Q

private interest

A

cost n benefits you personally incur

  • if ur choices dont affect others, private interest correspond w society
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5
Q

society interest

A

all cost n benefits, where they accrue to you or others

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6
Q

marginal private cost

A

seller extra cost to produce 1 more

(supply curve)

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7
Q

marginal external cost

A

extra cost imposed on bystanders from producing 1 more

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8
Q

external cost

A

cost seller impose on bystanders

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9
Q

marginal social cost

A

all marginal cost

marginal social cost = marginal private cost + marginal external cost

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10
Q

marginal private benefits

A

Buyer extra benefit from buying 1 more

(demand curve)

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11
Q

marginal external benefits

A

extra benefits enjoyed by bystanders from 1 more

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12
Q

marginal social benefits

A

all marginal benefits

marginal social benefits = marginal private benefits + marginal external benefits

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13
Q

socially optimal quantity

A

quantity that’s most efficient for society as a whole

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14
Q

rational rule for society

A

produce 1 more as long as marginal social benefit > marginal social cost

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15
Q

steps to analyze externalities

A
  1. predict equilibrium quantity to forecast what you think will happen
  2. asses what externalities are involves
  3. find socially optimal quantity
  4. compare equilibrium w socially optimal quantity
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16
Q

SOLUTION 1

solve externality problems

A

private bargaining & coase theorem

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17
Q

coase theorem

A

if bargain is costless & property rights are established, then external problems is solved by private bargain

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18
Q

SOLUTION 2

solve externality problems

A

corrective taxes & subsidies

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19
Q

corrective taxes

A

design to induce ppl to take account of negative externalities they cause

  • set corrective taxes = to marginal external cost

-fix negative externalities

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20
Q

corrective subsidy

A

design to induce people to take account of positive externalities

  • set subsidy = to marginal external benefit
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21
Q

SOLUTION 3

solve externality problems

A

cap & trade

  • CAP (quota) negative externalities using quantity regulation
  • increase efficiency by allowing TRADES
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22
Q

cap and trade proposal

A

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

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23
Q

SOLUTION 4

solve externality problems

A

laws, rules, and regulations

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24
Q

SOLUTION 5

solve externality problems

A

government support public goods

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25
Q

SOLUTION 6

solve externality problems

A

assign ownership rights for common resources problem

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26
Q

common resources

A

goods that are rival but nonexcludable

  • lead to tragedy of the commons
  • ex: fish, water, air
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27
Q

tragedy of the commons

A

tendency to overconsume a common resources

  • assigning ownership rights SOLVE it
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28
Q

nonexcludable

A

goods that cant exclude a person from using it

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29
Q

non rival

A

can be enjoyed or used by many people at the same time

  • free-rider problem
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30
Q

free-ride problem

A

enjoy benefits of a good w/out bearing cost

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31
Q

rival good

A

can only be used by 1 person

  • no free rider problem
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32
Q

public good

A

nonrival good that is nonexcludable

  • free rider problem
  • market underproduce public goods
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33
Q

club goods

A

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

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34
Q

labor demand (employers)

A

wage ↓ demand for labor ↑

(owner want to hire more worker when its low wage)

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35
Q

marginal product of labor

A

extra production occur from hiring 1 extra worker

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36
Q

marginal cost

(Marginal product of labor)

A

↑ from hiring 1 more

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37
Q

marginal benefit
(Marginal product of labor)

A

extra revenue from the addition of 1 more

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38
Q

marginal revenue product

A

measure marginal revenue from hiring 1 more

marginal revenue product = marginal product of labor x price

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39
Q

rational rule for employers

A

hire 1 more if marginal revenue product > wage

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40
Q

labor demand shift 1

A

changes in demand for your product

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41
Q

derived demand

A

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

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42
Q

labor demand shift 2

A

changes in price of physical capital

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43
Q

scale effect

A

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)

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44
Q

substitution effect
(Labor demand)

A

machine price ↓ demand for worker ↓

  • substitute effect dominate = labor n capital are substitute

(machine price ↓ they want less worker cuz machine take over)

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45
Q

labor demand shift 3

A

better management & productivity gains

  • improve management & technology ↑ productivity
    (meaning worker produce more)
  • labor demand
    ↑ worker marginal product = ↑
    labor demand
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46
Q

labor demand shift 4

A

nonwage benefit, subsidies, & taxes
- these r extra cost

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47
Q

labor supply

A

wage increase, more ppl want to work

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48
Q

rational rules for workers

A

work 1 more hr if wage > marginal benefit of another hr of leisure

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49
Q

Substitution effect
( sub vs income effect)

A

describe how people respond to relative price change

↑ wage ↑ incentive to work

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50
Q

individual labor supply

A

allocating ur time between labor n leisure

  • opportunity cost of working is the things you can do when ur not workings
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51
Q

income effect

A

↑ wage (raise income) ↓ work hours

52
Q

income & substitution effect offset

A

at high wage,

substitution effect ↑ work hours

income effect ↓ work hours

53
Q

backward-bending labor supply curve

A

low wage = substitution effect dominates ‘

high wage = income effect dominate

54
Q

price elasticity of labor supply

A

measures worker’s responsiveness to wage

55
Q

market labor supply curve

A

high wage = more willing to work

Reason why it’s upward slopping
1. new people enter workforce
↑ wage convince ppl to work

  1. existing workers, work more hours
    ↑ wage ↑ work hrs
  2. ppl switch jobs
    ↑ job A wage ↑ demand for job A (leave job B)
56
Q

Labor supply shift 1

A

change wage in other occupations

ex: hair and skin care
↑ skin care wage ↓ worker supplied for hair

57
Q

Labor supply shift 2

A

change in # of potential workers

↑ population ↑ worker supplied

58
Q

Labor supply shift 3

A

change benefits of not working

↑ marginal benefit of not working ↓ worker supplied

59
Q

Labor supply shift 4

A

nonwage benefits, subsidies, and income tax

60
Q

physical capital

A

machines, tools, structures

61
Q

market power

A

ability to raise price w out losing sales to competitor

62
Q

perfect competition

A

multiple business sells identical goods

LEAST MARKET POWER
- many competitor
- same products

↑ price = lose revenue
↓ price = gain revenue

63
Q

imperfect competition

A

market w few competitors and limited competition

64
Q

monopoly

A

only seller in the market

MOST MARKET POWER
- no competitor
- unique product

↑ ↓ price = no change

65
Q

oligopoly

A

market dominate by large seller w little competitor

MIDDLE MARKET POWER
- few competitors

↑ price = small Q ↓
↓ price = small Q ↑

66
Q

monopolistic competition

A

market w many business competing, each selling different products

MIDDLE MARKET POWER
- different products

  • ex: jeans, many competitor but different products cuz mom jeans crop jeans rip jeans…..

↑ price = small Q ↓
↓ price = small Q ↑

67
Q

Imperfect competition insight 2

A

market power allow seller to pursue individual pricing

68
Q

Imperfect competition insight 1

A

more competitor = less market power

69
Q

Imperfect competition insight 3

A

successful product differentiation = more market power

70
Q

Imperfect competition insight 4

A

imperfect competition gives buyers bargaining power

71
Q

Imperfect competition insight 5

A

best choice depends on actions other business make

72
Q

firm’s demand curve

A

show how buyers demand quantity varies as price change

73
Q

marginal revenue

A

addition to total revenue from selling 1 more

MR = output effect - discount effect

74
Q

output effect

A

price of extra item you sold

75
Q

discount effect

A

price cut you’ll have to offer
△P x Q

76
Q

rational rule for sellers

A

sells 1 more if MR > MC

77
Q

Market power problem (MP) 1

A

market power lead to worse outcome
- seller exploit MP

MP lead to higher price
- MP price > competitive price

MP lead to inefficiently smaller quantity
- MP Q < competitive quantity

MP yield larger economic profit
- firm w MP earn large profit margin
- profit margin = MP price - average per unit cost

78
Q

Market power problem 2

A

↑ competition = better outcome

  • competition lead to lower price
79
Q

Public Policy to Restrain MP 1

A

policies to ensure competition thrives

  • being a monopoly = legal
  • monopolizing = illegal
    (Prevent competition and new competition)
80
Q

competition policy

(antitrust policy)

A

law n regulation designed to ensure market remain in competition

81
Q

collusion

A

agreement by rivals to limit competition w each other

82
Q

anti-collusion

A

prevent business from agreeing to not compete

83
Q

Public Policy to Restrain MP 2

A

minimize MP harm

  • price ceiling limit MP abuse
84
Q

natural monopoly

A

single business can service the whole market at lower cost than multiple business

85
Q

accounting profit

A

= total revenue - explicit financial cost

  • explicit financial cost: money that leave the business
  • rent
  • wage
  • raw material
86
Q

forgone wages

(accounting profit opportunity cost)

A

if you dont launch this business, how much will you earn pursuing a different path?

87
Q

forgone interest

(accounting profit opportunity cost)

A

if you dont invest, how much annual interest will you earn investing elsewhere

88
Q

economic profit

A

determine if its worth to start a business

= total revenue - explicit financial cost - implicit OP cost

89
Q

implicit OP cost

A

= forgone wage + interest

ex: 60000 + (5% x 1000)

90
Q

average revenue

A

revenue per unit
total revenue
——————–
quantity

  • firms demand curve = average revenue curve
91
Q

average cost

A

cost per unit

quantity

quantity =
fixed variable
cost cost
——— + ———-
Q Q

92
Q

spreading fixed cost

A

↑ production from low level ↓ average cost

  • # produce small quantity ——> gradually produce large Q↓fixed cost ↓average cost
    cuz fixed cost is “spread” over more units meaning smaller cost per unit
93
Q

rising variable cost

A

↑ variable cost due to emerging inefficiencies = ↑ average cost

94
Q

profit margin

A

measure profit per unit sold

= price - avg cost
(average rev)

95
Q

short run

A

productivity capacity & number or type of competitor face is fixed

96
Q

long run

A

new supplier may enter or expand into ur market n existing supplier can shrink market

97
Q

rational rule for entry

A

enter a market if you expect to earn a positive economic profit

positive economic profit = price > avg cost

98
Q

what does ENTRY do to demand and profit?

A

entry ↓ demand n profit

  • new competitor will enter profitable markets
  • # new competitors make market less profitablemake u lose MP
99
Q

what does EXIT do to demand and profit?

A

exit ↑ demand n profit

  • rival leaves = more MP
100
Q

rational rule for exist

A

exit if you expect to earn a negative economic profit

negative economic profit = price < avg cost

101
Q

free entry

A

when there are no factors making it particularly difficult or costly for business to enter or exist

  • push price down to avg cost
102
Q

free exit

A

ensures ur market won’t remain unprofitable in long-run

  • push price up to avg cost
103
Q

barriers to entry

A

obstacle making difficult for new firm to enter market

104
Q

Barrier 1

A

demand side strategic
( customer lock in to prevent them from leaving)

105
Q

switch cost
(Barrier 1)

A

impediment that makes it costly for customers to switch to another sellers

106
Q

network effect
(Barrier 1)

A

develop network make more people buy the product

product becomes more useful

107
Q

Barrier 2

A

supply-side strategies
(prevent rival entry by gaining cost advantage that newcomers cant replicate)

108
Q

learning by doing
(Barrier 2)

A

increase production → lower cost → gain market share

109
Q

Barrier 3

A

regulatory strategies
(gov policies to prevent entry

ex: patents, regulation, license…

110
Q

Barrier 4

A

deterrence strategies
(scare off rivals)

111
Q

overcome barriers to entry

A
  1. demand-side strategies -combat customer lock in
  2. supply-side strategies overcome cost disadvantages
  3. regulatory strategies secure gov help
  4. overcome deterrence strategies to fight big guys
112
Q

price discrimination

A

selling same product at different prices
- set price close/below MB
- goals: reservation price

113
Q

reservation price

A

max price customer will pay for a product

114
Q

perfect price discrimination

A

charging each customer their reservation price

115
Q

2 profit boosting objective

A
  1. charge highest price for each sale
  2. make every possible sale where customers MB > ur MC
116
Q

efficiency of price discrimination

A

solve underproduction problem

  • price discrimination ↑ quantity sold
117
Q

selective discount

A
  • no price discrimination: charge everyone the same price so discount applies to ALL
  • price discrimination: select you want to give discount to
118
Q

price discrimination feasible (easy)

A
  1. ur business have MP
  2. u can prevent resale
  3. u can target right prices to right customers
119
Q

group pricing

A

price discrimination by charging different prices to different groups

120
Q

setting group price

A
  1. set price separately for each group
    a. what quantity should you produce
    - produce quantity where MR=MC
    b. what price to charge
    - look up to demand curve
  2. set different prices for different groups
121
Q

segment market

A

Dividing the market into group
CRITERIA
1. segment market into groups who demand differs
2. target group discount based on verifiable characteristics
3. base group discount on difficult-to-change characteristic

122
Q

hurdle method

A

offer lower price only to customers who are willing to overcome some hurdle

ex:
- alternative versions
- fluctuating price
- haggle (bargain)
- coupons
- worse service
- imperfect goods
- quantity discount
- bundling

123
Q

quantity discount

A

per-unit price is lower when buying larger Q

124
Q

bundling

A

selling different goods together as a package

125
Q
A