Public Choices

Introduction to Public Choices

Public choices are decisions that affect many people or society as a whole, often made by political leaders or public servants. These choices determine the allocation of large quantities of scarce resources and shape key aspects of economic and social life.

• Examples: Decisions about taxes, government spending, regulation, and international trade.

• Importance: Public choices can have widespread consequences, influencing efficiency, equity, and the distribution of resources.

Why Governments Exist

• Establish and maintain property rights: Governments define and enforce legal ownership and use of resources.

• Provide nonmarket allocation mechanisms: Some resources are allocated through government rather than markets, especially when markets fail.

• Redistribute income and wealth: Through taxes and transfers, governments can alter the distribution of economic resources.

Government Failure

Government failure occurs when government intervention leads to inefficiency, resulting in either overprovision or underprovision of goods and services.

• Overprovision: Supplying more than the efficient quantity.

• Underprovision: Supplying less than the efficient quantity.

The Political Marketplace

• Decision Makers: Voters, firms, politicians, and bureaucrats.

• Voters: Express demand through votes and campaign contributions.

• Firms: Influence policy via contributions and lobbying.

• Politicians: Supply policies to attract votes.

• Bureaucrats: Seek to maximize their department's budget and provide public goods/services.

Political Equilibrium

A political equilibrium is reached when the choices of all groups (voters, firms, politicians, bureaucrats) are compatible, and no group can improve its position by changing its choice.

Median Voter Theorem and Political Economy

• Median Voter Theorem: Politicians tend to adopt policies that appeal to the median voter to maximize electoral success.

• Asymmetry in Political Outcomes: Winners (often small, concentrated groups) may gain large per-capita benefits, while losses are spread thinly across many (diffuse losers).

• Example: U.S. sugar growers receive significant benefits per person, while the cost to each consumer is small.

Classification of Goods

Excludability and Rivalry

• Excludable: Only those who pay can enjoy the good (e.g., private security, farmed fish, ticketed concerts).

• Nonexcludable: Impossible or costly to prevent anyone from benefiting (e.g., police services, wild fish, broadcast TV).

• Rival: One person's use reduces availability for others (e.g., a can of soda, a fish).

• Nonrival: One person's use does not reduce availability for others (e.g., national defense, broadcast TV).

Four-Fold Classification of Goods

Public Goods

• Nonrival and nonexcludable: Can be consumed by everyone simultaneously; no one can be excluded.

• Example: National defense.

Common Resources

• Rival and nonexcludable: Use by one reduces availability for others, but exclusion is difficult.

• Example: Ocean fish.

Club Goods

• Nonrival and excludable: Many can use without reducing others' enjoyment, but access is restricted.

• Examples: Subscription services, toll roads.

Government Provision of Private Goods

• Some goods like healthcare and education are rival and excludable, yet governments provide them due to external benefits and concerns about fairness and efficiency.

Providing Public Goods

The Free-Rider Problem

The free-rider problem arises when individuals benefit from a good without paying for it, leading to underprovision by private markets.

• Public goods: Nonexcludability creates incentives to free ride.

• Result: Private firms have little incentive to produce public goods.

Valuing Public Goods

• Private Good Value: Maximum amount an individual is willing to pay for one more unit.

• Public Good Value: Maximum total amount all individuals are willing to pay for one more unit.

• Total Benefit: Dollar value placed on a given quantity.

• Marginal Benefit: Increase in total benefit from one more unit; diminishes as quantity increases.

Marginal Social Benefit (MSB) and Marginal Social Cost (MSC)

• Marginal Social Benefit (MSB): Sum of all individuals' marginal benefits at each quantity.

• Marginal Social Cost (MSC): Cost of providing one more unit, determined as for private goods.

• Efficient Quantity: Where .

Efficient Provision and Political Competition

• Government can tax all beneficiaries to fund public goods, overcoming the free-rider problem.

• Political competition drives parties to propose the efficient quantity, as voters prefer policies maximizing net benefit.

• Principle of Minimum Differentiation: Competing parties (or firms) tend to adopt similar positions to appeal to the majority.

Inefficiencies in Public Provision

• Overprovision: Bureaucrats may push for larger budgets, leading to more than the efficient quantity.

• Rational Ignorance: Voters may choose not to become informed if the cost of information exceeds expected benefit, enabling overprovision by bureaucrats.

• Deadweight Loss: Overprovision or underprovision creates inefficiency, represented by deadweight loss.

The Economics of Healthcare

Why Governments Provide Healthcare

• Healthcare would be underprovided and unfairly distributed if left to the market.

• Three main problems:

  • People underestimate the benefit of healthcare.

  • People underestimate their future needs.

  • Many cannot afford necessary care.

Market Failure in Healthcare

• Underestimation of Benefit: Lack of information leads to undervaluing insurance and healthcare.

• Short Time Horizon: Young and healthy individuals do not plan for future health needs.

• Affordability: Those with greatest need (chronically ill, aged) often cannot afford care.

• Marginal Social Benefit (MSB) > Marginal Benefit (MB): The social value of healthcare exceeds what individuals perceive, leading to underprovision and deadweight loss.

Public Funding Approaches

• Universal Coverage, Single Payer: Government provides and pays for healthcare (e.g., UK, Canada). Everyone is covered, but quantity supplied may be less than efficient, leading to waiting times.

• Private and Government Insurance: U.S. system combines private insurance, government programs, and out-of-pocket payments. Quantity provided may exceed efficient level, creating deadweight loss.

• Subsidized Private Insurance (Obamacare): Government subsidizes insurance to increase coverage. Efficiency depends on whether subsidies match the gap between MSB and willingness to pay.

Vouchers as a Solution

• Vouchers: Tokens for purchasing specific goods (e.g., health insurance). Advantages include flexibility, control over total spending, and increased competition among providers.

• Benefits: Can be used with public or private provision, limit bureaucratic overproduction, distribute public support broadly, and encourage efficiency.

Review Questions and Key Concepts

1. Government failure can occur with either overprovision or underprovision of goods and services.

2. A good that is rival and nonexcludable is a common resource.

3. The political system is vulnerable to small, concentrated groups with large potential gains.

4. Public goods are nonrival and nonexcludable.

5. The free-rider problem leads to underproduction of public goods.

6. Efficient provision requires (marginal cost equals marginal benefit).

7. Healthcare suffers from people underestimating benefits and not being able to afford care.

8. White-collar workers have low loading fees and large benefits from pre-tax premiums in the health insurance market.

Key Formulas and Concepts

• Efficient Quantity of Public Good:

• Marginal Social Benefit (Public Good):

  • (vertical sum of individual marginal benefits)

• Deadweight Loss: Area between MSB and MSC curves when quantity is not efficient.

Summary Table: Classification of Goods

Additional info: The above notes expand on brief points from the slides, providing definitions, examples, and context for key microeconomic concepts related to public choices, public goods, and healthcare. Equations and tables are included for clarity and exam preparation.