Welfare economics: fundamental theorems and social welfare function. - Question Bank

1. The concept of 'social welfare' in welfare economics is generally understood as:
A) The sum of all individual incomes.
B) A measure of the overall well-being of society, considering utility and distribution.
C) The total market value of goods and services produced.
D) The level of employment in an economy.
2. Welfare economics provides a framework for evaluating the desirability of different economic states or policies based on:
A) Profitability alone.
B) Efficiency and equity considerations.
C) Aggregate demand levels.
D) GDP growth rates.
3. A social welfare function that treats all individuals' utilities symmetrically and aims to maximize the minimum utility level is:
A) Utilitarian
B) Rawlsian
C) Egalitarian
D) Libertarian
4. The 'fundamental theorems of welfare economics' link:
A) Macroeconomic stability and economic growth.
B) Market efficiency and income distribution.
C) Perfect competition and Pareto efficiency.
D) Government intervention and market outcomes.
5. Which of the following is a limitation of the Coase Theorem in practice?
A) High transaction costs.
B) The existence of perfect competition.
C) The absence of externalities.
D) The presence of public goods.
6. The Coase Theorem suggests that, under certain conditions (e.g., low transaction costs), private parties can bargain to an efficient solution to externality problems, regardless of:
A) The level of government intervention.
B) The initial assignment of property rights.
C) The existence of public goods.
D) The degree of market competition.
7. If marginal social cost (MSC) exceeds marginal private cost (MPC), it indicates:
A) A positive externality in consumption.
B) A negative externality in consumption.
C) A positive externality in production.
D) A negative externality in production.
8. If marginal social benefit (MSB) exceeds marginal private benefit (MPB), it indicates:
A) A negative externality in consumption.
B) A positive externality in consumption.
C) A negative externality in production.
D) A positive externality in production.
9. The concept of 'social cost' in welfare economics includes:
A) Only the private costs incurred by the producer.
B) Private costs plus any external costs imposed on society.
C) Only the opportunity cost of resources.
D) The total revenue earned by the firm.
10. A social welfare function that values equality of outcomes would likely resemble:
A) A utilitarian function.
B) A Rawlsian function.
C) A Cobb-Douglas utility function.
D) A Leontief (fixed proportions) function.
11. Which condition is violated when there is significant information asymmetry between buyers and sellers?
A) Perfect competition.
B) No externalities.
C) Perfect information.
D) Profit maximization.
12. The 'deadweight loss' associated with market power or externalities represents:
A) The loss of potential gains in welfare that could have been achieved in a perfectly competitive market.
B) The profit earned by the monopolist.
C) The tax revenue collected by the government.
D) The cost of producing public goods.
13. Monopolies are generally considered inefficient from a welfare economics perspective because:
A) They produce too much output at too low a price.
B) They produce too little output at too high a price, leading to a deadweight loss.
C) They always operate at the lowest point of their average cost curve.
D) They are perfectly responsive to consumer demand.
14. A situation where a single seller has market power and can influence prices is called:
A) Perfect competition.
B) Monopoly.
C) Monopolistic competition.
D) Oligopoly.
15. The concept of 'consumer surplus' and 'producer surplus' are used in welfare economics to measure:
A) Government revenue.
B) The net benefits to consumers and producers from market transactions.
C) The total cost of production.
D) The market share of firms.
16. The tension between efficiency and equity arises because:
A) Policies that increase efficiency always increase equity.
B) Policies that promote equity may sometimes lead to efficiency losses, and vice-versa.
C) Efficiency and equity are always perfectly aligned.
D) There are no trade-offs between efficiency and equity.
17. The 'equity' criterion in welfare economics concerns:
A) Whether resources are used to their maximum potential.
B) The fairness of the distribution of resources and well-being.
C) The total amount of goods and services produced.
D) The efficiency of production processes.
18. What does the 'efficiency' criterion in welfare economics primarily concern?
A) Equity and fairness in distribution.
B) The optimal use of scarce resources to maximize total output or satisfaction.
C) The stability of market prices.
D) The growth rate of the economy.
19. The Bergson-Samuelson social welfare function is characterized by:
A) Its ability to be derived from observable individual choices.
B) Being a general representation of social welfare that depends on individual utilities.
C) Its focus on maximizing individual utility.
D) Its assumption of a utilitarian framework.
20. A 'contract curve' in a pure exchange economy represents:
A) All possible allocations of goods.
B) All Pareto efficient allocations of goods between two individuals.
C) All allocations where no one can be made better off.
D) All allocations resulting from market competition.
21. The social indifference curves in a welfare analysis represent:
A) Combinations of goods that yield the same level of individual utility.
B) Combinations of utility levels for different individuals that yield the same level of social welfare.
C) The production possibilities frontier of an economy.
D) The budget constraints faced by consumers.
22. If an economy is not at a Pareto efficient allocation, it implies that:
A) It is impossible to improve anyone's well-being.
B) Resources are being wasted, and potential improvements in well-being exist.
C) The distribution of income is perfectly equal.
D) All goods are public goods.
23. Which condition is essential for markets to achieve Pareto efficiency according to the First Fundamental Theorem?
A) Government regulation of prices.
B) Presence of externalities.
C) Absence of externalities and perfect competition.
D) Universal access to information.
24. The concept of 'social rate of discount' in welfare economics is used to:
A) Determine the optimal level of savings.
B) Compare costs and benefits that occur at different points in time, reflecting societal time preferences.
C) Calculate the elasticity of demand.
D) Measure the degree of market concentration.
25. Moral hazard is a situation where:
A) One party in a transaction takes on more risk because another party bears the cost of that risk.
B) A seller has more information than a buyer.
C) A buyer has more information than a seller.
D) The market fails to provide essential public goods.
26. The problem of 'adverse selection' is a type of market failure related to:
A) Externalities.
B) Public goods.
C) Information asymmetry.
D) Monopolies.
27. What is a 'Pigouvian subsidy' intended to address?
A) Negative externalities.
B) Market monopolies.
C) Positive externalities.
D) Information asymmetry.
28. A Pigouvian tax is a tool used in welfare economics to:
A) Encourage the production of public goods.
B) Correct for negative externalities by making the polluter pay.
C) Subsidize industries with positive externalities.
D) Achieve an equal distribution of income.
29. What is the primary goal of applying welfare economics principles to policy decisions?
A) To ensure every individual is equally wealthy.
B) To identify policies that improve overall societal well-being.
C) To maximize the profits of private firms.
D) To reduce the size of government.
30. Which scenario represents a market failure that welfare economics seeks to address?
A) A perfectly competitive market with no externalities.
B) A situation where private costs exceed social costs due to pollution.
C) An economy with complete information and no public goods.
D) A decentralized market achieving a Pareto efficient outcome.
31. The concept of 'potential Pareto improvement' is closely related to:
A) Pareto efficiency.
B) Kaldor-Hicks efficiency.
C) Social welfare maximization.
D) Market equilibrium.
32. Kaldor-Hicks efficiency is achieved when:
A) No one is made worse off.
B) A policy change benefits some individuals and harms others, but the gains outweigh the losses, making compensation possible.
C) Resources are allocated equally.
D) Total societal utility is maximized.
33. The condition 'Independence of Irrelevant Alternatives' means that the social ranking of two options should only depend on:
A) The number of voters.
B) The overall utility of society.
C) The preferences of the median voter.
D) The preferences of the voters between those two options.
34. Arrow's Impossibility Theorem demonstrates that it is impossible to devise a voting system that satisfies a given set of desirable fairness criteria when aggregating individual preferences into a collective choice, unless certain conditions are met. Which of these is NOT one of Arrow's axioms?
A) Unrestricted Domain (Universality)
B) Pareto Optimality (Efficiency)
C) Independence of Irrelevant Alternatives
D) Dictatorship
35. What is the 'free-rider problem'?
A) Individuals benefiting from a good without paying for it, leading to under-provision.
B) Firms producing goods at a lower cost than necessary.
C) Consumers demanding more than is available.
D) Governments imposing excessive taxes.
36. The existence of public goods often leads to market failure because of:
A) Perfect competition.
B) The free-rider problem.
C) Information asymmetry.
D) Externalities.
37. In the context of welfare economics, what is a 'public good'?
A) A good that is rivalrous and excludable.
B) A good that is non-rivalrous and non-excludable.
C) A good that is rivalrous and non-excludable.
D) A good that is non-rivalrous and excludable.
38. What does the condition of 'no externalities' imply for Pareto efficiency?
A) Market prices accurately reflect all costs and benefits.
B) Government intervention is always required.
C) Individual decisions do not affect others' well-being.
D) Resources are always allocated in a socially optimal way.
39. The 'veil of ignorance' concept is associated with which type of social welfare function?
A) Utilitarian
B) Egalitarian
C) Rawlsian
D) Libertarian
40. A Rawlsian social welfare function, based on the 'veil of ignorance', prioritizes:
A) Maximizing the sum of all individuals' utilities.
B) Ensuring the well-being of the least advantaged individual.
C) Achieving the highest possible average utility.
D) Equal distribution of all resources.
41. An example of a utilitarian social welfare function is:
A) W = min(U1, U2, ..., Un)
B) W = U1 + U2 + ... + Un
C) W = max(U1, U2, ..., Un)
D) W = (U1 * U2 * ... * Un)^(1/n)
42. Which of the following is a key challenge in constructing a social welfare function?
A) Ensuring individual preferences are inconsistent.
B) The impossibility of aggregating diverse individual preferences into a single, consistent societal ranking (Arrow's Impossibility Theorem).
C) The assumption of perfect competition.
D) The lack of data on individual consumption.
43. A social welfare function (SWF) attempts to:
A) Measure the total output of an economy.
B) Aggregate individual preferences into a societal preference ordering.
C) Determine the optimal level of inflation.
D) Analyze the impact of international trade on domestic industries.
44. What role do lump-sum transfers play in the context of the Second Fundamental Theorem of Welfare Economics?
A) They are unnecessary if markets are perfect.
B) They are essential for achieving any desired distribution while maintaining Pareto efficiency.
C) They distort market signals and lead to inefficiency.
D) They are primarily used to correct market failures.
45. The Second Fundamental Theorem of Welfare Economics states that, under certain conditions, any Pareto efficient allocation of resources:
A) Can be achieved through competitive markets alone.
B) Is necessarily equal.
C) Can be decentralized via price mechanisms, provided appropriate lump-sum transfers are made.
D) Requires significant government regulation.
46. Pareto efficiency is achieved when:
A) Resources are distributed equally among all individuals.
B) No individual can be made better off without making someone else worse off.
C) Total societal welfare is maximized regardless of distribution.
D) All goods and services are produced at the lowest possible cost.
47. Which of the following is NOT a condition typically required for the First Fundamental Theorem of Welfare Economics to hold?
A) Perfect competition.
B) No externalities.
C) Perfect information.
D) Significant government intervention.
48. The First Fundamental Theorem of Welfare Economics states that, under certain conditions, a competitive market equilibrium is:
A) Pareto inefficient.
B) A Pareto improvement.
C) Pareto efficient.
D) A Kaldor-Hicks efficient outcome.
49. What is the primary focus of welfare economics?
A) Maximizing individual utility without considering societal impact.
B) Analyzing the allocation of resources and its impact on societal well-being.
C) Studying the behavior of individual firms in isolation.
D) Forecasting macroeconomic trends and national income.
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