chapter 3 from the book: The Analysis of Competitive Markets Flashcards
what do government imposed price ceilings do?
cause the quantity of a good demanded to rise (at the lower price, consumers want to buy more)
the quantity supplied to fall (producers are not willing to supply as much at the lower price)
creates a shortage
what must we take into account with government imposed price ceilings other than the consumers that managed to get their hands on the goods at a lower price?
we must take into account those who cannot obtain the good, how much better off are consumers as a whole?
if we lump consumers and producers together, will their total welfare be greater or lower, and by how much?
consumer surplus
total benefit or value that consumers receive beyond what they pay for the good
the area below the demand curve down to the market price
how can we measure the overall gain or loss to consumers from a government intervention?
by measuring the resulting change in consumer surplus
producer surplus
total benefit or value that producers receive beyond what they sell for the good
the area above the supply curve up to the market price
how can we measure the overall gain or loss to producers from a government intervention?
by measuring the resulting change in producer surplus
which consumers are worse off with imposing a price ceiling?
those who have been rationed out of the market because of the reduction in production and sales
reduction in production and sales from Q0 to Q1
which consumers are better off with imposing a price ceiling?
those that manage to buy at the Pmax
their personal consumer surplus increased
how do you find consumer surplus with government imposed price ceiling?
Original surplus - consumer loss + additional surplus
Original triangle - triangle B + Rectangle A
what does price ceiling do do producers?
some producers (those with relatively lower costs) will stay in the market but will receive a lower price for their output,
other producers will leave the market
both groups will lose producer surplus
what is the surplus lost by producers in a price ceiling?
the surplus gained by consumers (rectangle A) + the drop in production (triangle C)
surplus change: - (A + C)
with an imposed price ceiling, is total surplus increased or decreased?
it is decreased
how do you call the loss to surlus?
deadweight loss
what causes the deadweight loss given by a imposed price ceiling?
an inefficiency caused by price controls
the loss in producer surplus exceeds the gain in consumer surplus
how do you find the deadweight loss given by a imposed price ceiling?
triangles B + C
economic efficiency
the maximization of aggregate consumer and producer surplus
market failure
Situation
in which an unregulated competitive market is inefficient because prices fail to provide proper signals to consumers and producers
does not maximize aggregate consumer and producer surplus
what are the 2 important instances in which market failures can occur
externalities
lack of information
externality
Action taken by either a producer or a consumer which affects other producers or consumers but is not accounted for by the market price
how can lack of information lead to market failure
cannot make utility-maximizing purchasing decisions
what constitutes the deadweight loss of an imposed price floor?
triangles B and C
with an imposed price floor, what happens with consumer surplus? why?
it is reduced by rectangle A and triangle B
consumer surplus loss: A + C
because those that buy the product now have to pay more (A) and some decided to vag the trade (B)
Consumers clearly are worse off as a result of this policy
with an imposed price floor, what happens with producer surplus? why?
their surplus is increased by rectangle A because they sell at a higher price
their surplus is also reduced by rectangle C because consumers don’t buy as many products
they also don’t produce what they could produce at that same imposed price (creating a trapezoid from the quantity supplied to the quantity that should be supplied under the supply curve)
this is also a surplus loss
overall, producers also face more surplus loss than gains
price supports
Price set by government above free-market level and maintained by governmental purchases of excess supply.
what is the effect ofnconsumer surplus with a price support? why?
surplus loss: rectangle A + triangle B
because consumers buy the same that what they would have bough with a price floor, so basically less
government buys the rest
what is the effect on producer surplus with a price support?
producers gain
Producers are now selling a larger quantity
producer surplus gain: rectangle A + triangle B + triangle D
how is the government affected by a price support?
they have to buy the surplus which is a cost to them
Q2 - Q1 * Ps which = rectangle
what is the deadweight loss of a price support?
rectangle of the cost government pays - triangle D