Presentation on theme: "Review: Supply and Demand"— Presentation transcript:
0Chapter 4 The Market Strikes Back 1 April 2017ECONOMICSChapter 4The Market Strikes Back
1Review: Supply and Demand 1 April 2017Review: Supply and DemandThe previous lesson focused on demand and supply, we studied the demand curve and the supply curve…PQuantitySD
2Review: Supply and Demand 1 April 2017Review: Supply and Demand…and the market equilibrium:PQuantityDSPeqQeq
3What we will learn in this chapter 1 April 2017What we will learn in this chapter➤ The meaning of price controls and quantity controls, two kinds of government intervention in markets➤ How price and quantity controls create problems and make a market inefficient➤ Why economists are often deeply skeptical of attempts to intervene in markets➤ Who benefits and who loses from market interventions, and why they are used despite their well- known problems➤ What an excise tax is and why its effect is similar to a quantity control➤ Why the deadweight loss of a tax means that its true cost is more than the amount of tax revenue collected
41 April 2017Price controlsPrice controls are legal restrictions on how high or low a market price may go.2 kinds of price controls:Price Ceilings: a maximum price sellers are allowed to charge for a good.It’s an upper limit for the price.Price Floors: a minimum price buyers are required to pay for a good.I’ts a lower limit for the price.
5Price controls Why Price controls? 1 April 2017Price controlsWhy Price controls?During crisis times, emergencies or wars the government wants to protect the consumers from rapidly increasing prices.If the equilibrium wage given by supply and demand for low skilled workers is below poverty level, the government can set a minimum wage.
6Price controls: price ceilings 1 April 2017Price controls: price ceilingsEquilibriumPrice ceilingDQuantity of icecreamsPrice322008004S100ShortagePrice CeilingDQuantity of icecreamsPrice322004S100
7Price controls: Price Celings in Apartments 1 April 2017Price controls: Price Celings in Apartments
8Price controls: price ceilings 1 April 2017Price controls: price ceilingsBecause of these ceilings, we are faced with a shortage.The shortage will lead to inefficiencies:A market or an economy is inefficient if there are missed opportunities: some people could be made better off without making other people worse off.
9Price controls: price ceilings 1 April 2017Price controls: price ceilingsLet’s take a look at the different possible inefficiencies:Inefficient Allocation to ConsumersWasted ResourcesInefficiently Low QualityBlack Markets
10Price controls: price ceilings 1 April 2017Price controls: price ceilingsInefficient Allocation to ConsumersPrice ceilings can lead to inefficiency in the form of inefficient allocation to consumers: people who really want the good and are willing to pay a high price don’t get it, and those who are not so interested in the good and are only willing to pay a low price do get it.Example: rent control. In such case people get the appartment usually through luck or personal connections.
11Price controls: price ceilings 1 April 2017Price controls: price ceilingsWasted ResourcesPrice ceilings typically lead to inefficiency in the form of wasted resources: people spend money, time and expend effort in order to deal with the shortages caused by the price ceiling.You waste a lot of time looking for a good (e.g. an appartment) in case of shortage, the time has it’s value! You can work or just rest, do something better than look for a good you’ can’t find.
12Price controls: price ceilings 1 April 2017Price controls: price ceilingsInefficiently Low QualityPrice ceilings often lead to inefficiency in that the goods being offered are of inefficiently low qualityIn case of rent controls, the landlords will not improve the conditions of the appartments, there is no incentive since the rental fee is low but the main reason is that since there is a shortage, people are willing to rent the apartment as it is, even in bad condition!
13Price controls: price ceilings 1 April 2017Price controls: price ceilingsBlack MarketsA black market is a market in which goods or services are bought and sold illegally—either because it is illegal to sell them at all or because the prices charged are legally prohibited by a price ceiling.If someone for example bribes (gives extra money) to the apartment owners he will get the apartment, but the honest people that don’t break the law will never find one this way!
14Price controls: price floors 1 April 2017Price controls: price floorsPrice Floors: a minimum price buyers are required to pay for a good.I’ts a lower limit for the price.The minimum wage is a legal floor on the wage rate, which is the market price of labor.
15Price controls: price floors 1 April 2017Price controls: price floorsEquilibriumPrice floorDQuantity of icecreamsPrice322004S100DQuantity of icecreamsPrice322006004S100SurplusPrice Ceiling
17Price controls: price floors 1 April 2017Price controls: price floorsWhy a Price Floor Causes InefficiencyInefficient Allocation of Sales Among SellersPrice floors lead to inefficient allocation of sales among sellers: those who would be willing to sell the good at the lowest price are not always those who actually manage to sell it. Example: Farm SubsidiesWasted ResourcesLike a price ceiling, a price floor generates inefficiency by wasting resources.
18Subsidies The United States subsidizes certain industries like farming 1 April 2017SubsidiesThe United States subsidizes certain industries like farmingSubsidies are a form of financial assistance paid to a business or economic sector. Most subsidies are made by the government to producers or distributors in an industry to prevent the decline of that industry
19Price controls: price floors 1 April 2017Price controls: price floorsInefficiently High Quality and QuantityPrice floors often lead to inefficiency in that goods of inefficiently high quality are offered: sellers offer high-quality goods at a high price, even though buyers would prefer a lower quality at a lower price.Or the seller offers more quantity than is demanded and we are left with a surplus