economic efficiency principles of microeconomics 2023 boris nikolaev
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Economic Efficiency Principles of Microeconomics 2023 Boris Nikolaev. The Water-Diamond Paradox. Another look at the demand curve…. We can think of the demand curve as The marginal (additional) benefit from consuming one more unit of good. P. D = MB. Q. Consumer Surplus. - PowerPoint PPT PresentationTRANSCRIPT
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Economic EfficiencyPrinciples of Microeconomics 2023
Boris Nikolaev
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The Water-Diamond Paradox
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Another look at the demand curve…
P
Q
D = MB
We can think of the demand curve asThe marginal (additional) benefit fromconsuming one more unit of good.
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Consumer Surplus
P
Q
D = MB
Difference between what consumersare willing to pay and what they actually pay.
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"The price which a person pays for a thing can never exceed, and seldom comes up to that which he would be willing to pay rather than go without it: so that the satisfaction which he gets from its purchase generally exceeds that which he gives up in paying away its price; and he thus derives from the purchase a surplus of satisfaction. The excess of price which he would be willing to pay rather than go without the thing, over that which he actually does pay, is the economic measure of this surplus satisfaction. It may be called consumer’s surplus.“
A. Marshall
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Producers Surplus
P
Q
S=MC
Difference between what producersare willing to sell their product at and what they actually receive for it.
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Efficiency gains from trade
• In Just Go With It [watch here]
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Efficiency (in a free market)
P*
Q*
S
D
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Welfare (deadweight) loss (underproduction)
P*
Q*
S=MC
D=MB
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Welfare (deadweight) loss (overproduction)
P*
Q*
S
D
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Government Price-Fixing
• Price floors (e.g. the minimum wage law)
• Price ceilings (e.g. rent control, price gauging)
• Price support (e.g., dairy subsidies)
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Price Floor (e.g. minimum wage)
P*
Q*
P
S labor
D labor
min. wage
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Price Floor (e.g. minimum wage)
P*
Q*
P
S labor
D labor
min. wage
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Economic Effects of the Min. Wage Law
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Practice Question
When a binding price floor is imposed on a market to benefit sellers,
A. no sellers actually benefit.B. some sellers benefit, but no sellers are harmed.C. some sellers benefit, and some sellers are harmed.D. all sellers benefit.
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Price Ceiling (e.g. rent control)
P*
Q*
P
S
D
rent ceiling
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Price Ceiling (e.g. rent control)
P*
Q*
P
S
D
rent ceiling
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Economic Effects of Price Ceiling
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Work in PairsA. Using the graph shown, analyze the effect a $300 price ceiling would have on the market for ten-speed bicycles. Would this be a binding price ceiling?
B. Using the graph shown, analyze the effect a $700 price floor would have on this market for ten-speed bicycles. Would this be a binding price floor?
C. What would be the deadweight loss if there is a $300 price ceiling?
S
D
1000 2000 3000 4000 5000 6000 7000 8000 quantity
100
200
300
400
500
600
700
800
900
1000price
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Price Support (dairy price support)
P*
Q*
S
D
P support price
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Price Support (dairy price support)
P*
Q*
S
D
P
support price
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Economic Effects of Price Support
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Work in Pairs
A. Using the graph shown, analyze the effect a $600 price support.
B. What would be the cost of this program to the government (or the US taxpayer?)
C. What would be the deadweight loss if there is a $300 price ceiling?
S
D
1000 2000 3000 4000 5000 6000 7000 8000 quantity
100
200
300
400
500
600
700
800
900
1000price
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Should we legalize the market …
… for human organs? [See here]
TRIVIA
Which is the only country in the world with a free market for organs?
a. Indiab. Switzerlandc. Irand. Bulgariae. Iraq
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Currently…
P*
Qs*
S
D
P
Notice that the supply curveis vertical. We will call suchcurve perfectly inelastic.
Qd0
cost is $0 (donations) shortage of organs (89K waiting list + 400 die every year)
<
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What if we had a free market?
P*
Q*
S
D
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What about prostitution?
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The American Class System
“Who controls the past, controls the future. And those who control the present control the past.”
George Orwell