Chapter 6: Efficiency and Fairness of Markets

Resource Allocation Methods

Resource allocation refers to the process by which resources are distributed among competing uses in an economy. Different methods include:

• Market price: Resources go to those willing and able to pay the most.

• Command: Allocation by authority (e.g., government).

• Majority rule: Allocation by voting.

• Contest: Allocation to winners of competition.

• First-come, first-served: Allocation to those who arrive first.

• Lottery: Allocation by random selection.

• Personal characteristics: Allocation based on attributes (e.g., age, gender).

• Force: Allocation by seizure or threat.

Allocative Efficiency

Allocative efficiency occurs when resources are distributed so that it is impossible to make someone better off without making someone else worse off. This is achieved when the value consumers place on a good (marginal benefit) equals the cost of resources used to produce it (marginal cost).

• Connection to the PPF: Allocative efficiency is achieved at the point on the Production Possibility Frontier (PPF) where marginal benefit equals marginal cost.

Marginal Benefit and Marginal Cost

• Marginal Benefit (MB): The additional benefit received from consuming one more unit of a good or service. The MB curve typically slopes downward, reflecting diminishing marginal benefit.

• Marginal Cost (MC): The additional cost of producing one more unit of a good or service. The MC curve typically slopes upward, reflecting increasing marginal cost.

Determining Allocative Efficiency

• Allocative efficiency is achieved when .

• If , increase production; if , decrease production.

Value vs. Price

• Value: The maximum amount a consumer is willing to pay (measured by marginal benefit).

• Price: The amount actually paid for a good or service.

Cost vs. Price

• Cost: is what a seller must give up to produce the good

• Price: is what a seller receives when the good is sold.

Demand, Marginal Benefit, and Consumer Surplus

• The demand curve represents the marginal benefit curve.

• Consumers buy up to the point where marginal benefit equals price.

• Consumer Surplus: The difference between what consumers are willing to pay and what they actually pay.

Formula:

Example: If a consumer is willing to pay $10 for a good but pays $7, the consumer surplus is $3.

Cost, Price, Supply, and Producer Surplus

• The supply curve represents the marginal cost curve.

• Producers supply up to the point where marginal cost equals price.

• Producer Surplus: The difference between the price received and the minimum price at which producers are willing to sell (marginal cost).

Formula:

Example: If a producer's marginal cost is $5 and the market price is $8, the producer surplus is $3 per unit.

Market Equilibrium and Surpluses

• At equilibrium, consumer surplus and producer surplus are maximized.

• Marginal benefit equals marginal cost at the equilibrium quantity and price.

Deadweight Loss and Market Failure

• Deadweight Loss: The reduction in total surplus that occurs when the market is not in equilibrium (due to underproduction or overproduction).

• Sources of Market Failure: Price controls, taxes, externalities, public goods, and imperfect competition.

Formula:

Fairness in Markets

• Two Views of Fairness:

  • Fair rules: Fairness is achieved if the rules of the game are fair (equality of opportunity).

  • Fair results: Fairness is achieved if outcomes are fair (equality of outcome).

• The Big Tradeoff: The tradeoff between efficiency and fairness; policies that increase fairness may reduce efficiency and vice versa.

Chapter 7: Government Actions in Markets

Price Ceilings

A price ceiling is a legal maximum price that can be charged for a good or service (e.g., rent control).

• When set below equilibrium, it creates a shortage.

• Consequences include black markets and increased search activity (time spent looking for goods).

• Consumer surplus may increase for some, but producer surplus falls, and deadweight loss arises.

Price Floors

A price floor is a legal minimum price (e.g., minimum wage).

• When set above equilibrium, it creates a surplus (e.g., unemployment in labor markets).

• Consequences include unsold surpluses and inefficiency.

• Consumer surplus falls, producer surplus may rise for some, but deadweight loss occurs.

Production Quotas

A production quota is an upper limit on the quantity of a good that may be produced.

• Quotas restrict supply, raise prices, and reduce total surplus.

• Consumer surplus falls, producer surplus may rise for some, but deadweight loss results.

Efficiency and Fairness of Government Interventions

• Price controls and quotas generally reduce market efficiency and create deadweight loss.

• Fairness depends on the distribution of gains and losses among consumers and producers.

Chapter 14: Production and Cost

The Firm’s Goal

• The primary goal of a firm is to maximize economic profit.

Types of Costs

• Opportunity Cost: The value of the next best alternative forgone.

• Explicit Cost: Direct, out-of-pocket payments (e.g., wages, rent).

• Implicit Cost: Indirect, non-monetary opportunity costs (e.g., owner’s time).

• Economic Depreciation: The fall in the market value of a firm’s capital over time.

• Normal Profit: The return to entrepreneurship; the minimum profit necessary to keep a firm in business.

Economic Profit Formula:

Short Run and Long Run

• Short Run: At least one input is fixed.

• Long Run: All inputs are variable.

Product Measures in the Short Run

• Total Product (TP): Total output produced.

• Marginal Product (MP): Additional output from one more unit of input.

• Average Product (AP): Output per unit of input.

Formulas:

where is the quantity of labor.

Law of Decreasing Marginal Returns

• As more of a variable input is added to a fixed input, marginal product eventually decreases.

Relationship Between Marginal Product and Average Product

• When MP > AP, AP rises; when MP < AP, AP falls.

Cost Measures

• Total Cost (TC): Sum of all costs.

• Total Fixed Cost (TFC): Costs that do not vary with output.

• Total Variable Cost (TVC): Costs that vary with output.

• Average Total Cost (ATC):

• Average Fixed Cost (AFC):

• Average Variable Cost (AVC):

Example Table:

Additional info: Table values are illustrative and may differ from specific textbook examples.

Cost Curves and Product Curves

• Marginal and average product curves are inversely related to marginal and average cost curves.

• As marginal product rises, marginal cost falls, and vice versa.

Shifts in Cost Curves

• Cost curves shift due to changes in input prices, technology, or productivity.

Economies and Diseconomies of Scale

• Economies of Scale: Long-run average cost falls as output increases.

• Diseconomies of Scale: Long-run average cost rises as output increases.

• Constant Returns to Scale: Long-run average cost remains unchanged as output increases.

The Long-Run Average Cost Curve (LRAC)

• The LRAC shows the lowest possible average cost for each output level when all inputs are variable.

• It is typically U-shaped due to economies and diseconomies of scale.