Price-Taking Firm: A firm that cannot influence the market price of its product and must accept the prevailing price.
Monopolist: A firm that is the sole producer of a good or service with no close substitutes, giving it the power to set prices.
Price Taker: A buyer or seller that has no control over the market price and must accept the price set by the market.
Perfectly Competitive Market: A market with many buyers and sellers, identical products, no barriers to entry or exit, and perfect information.
Perfectly Competitive Industry: An industry where all firms are price takers and produce homogeneous goods.
Free Entry and Exit: The condition where firms can freely enter or exit the market without significant barriers.
Natural Monopoly: A market where a single firm can produce at a lower cost than multiple firms due to economies of scale.
Oligopoly: A market structure with a few large firms dominating the market, often interdependent.
HHI (Herfindahl-Hirschman Index): A measure of market concentration calculated by summing the squares of each firm’s market share.
Monopolistic Competition: A market structure with many firms producing similar but differentiated products.
Marginal Revenue: The additional revenue generated from selling one more unit of a good or service.
Marginal Revenue Curve: A curve showing how marginal revenue changes as output increases.
Interdependent: A situation in which firms’ decisions affect each other’s outcomes.
Duopoly: A market with only two firms.
Cartel: A group of firms that collude to limit output and increase prices, acting like a monopoly.
Collusion: An agreement among firms to limit competition.
Noncooperative Behavior: Firms acting in their own self-interest rather than cooperating.
Game Theory: The study of strategic decision-making.
Payoff Matrix: A table showing the outcomes of different strategies in a game.
Prisoner’s Dilemma: A game where individual rationality leads to a worse collective outcome.
Dominant Strategy: A strategy that yields the best payoff regardless of the opponent’s actions.
Nash Equilibrium: A situation where no player can improve their outcome by unilaterally changing their strategy.
Tit for Tat: A strategy where a player replicates the opponent’s previous move to encourage cooperation.
Tacit Collusion: Firms indirectly coordinate actions without explicit agreements.
Antitrust Policy: Laws and regulations designed to prevent anti-competitive behavior and promote competition.
Product Differentiation in Oligopoly: Firms make products slightly different to reduce competition.
Marginal Social Cost: The total cost to society of producing an additional unit of a good, including external costs.
Marginal Social Benefit: The total benefit to society from consuming an additional unit of a good, including external benefits.
External Cost: A cost incurred by third parties due to production or consumption of a good.
Externalities: Side effects of production or consumption that affect third parties.
Negative Externalities: Costs imposed on others (e.g., pollution).
Positive Externalities: Benefits conferred on others (e.g., education).
Coase Theorem: Suggests that private bargaining can resolve externalities if property rights are well-defined and transaction costs are low.
Emissions Tax: A tax on the amount of pollution emitted to internalize external costs.
Pigouvian Tax: A tax designed to correct negative externalities.
Tradeable Emissions Permits: Permits that allow a firm to emit a certain amount of pollution, which can be traded in a market.
Pigouvian Subsidy: A subsidy designed to encourage activities with positive externalities.
Technology Spillover: Positive externalities from technological innovation.
Network Externalities: Benefits that increase as more people use a good or service.
Positive Feedback: A situation where a product becomes more valuable as its adoption increases.
Excludable: A good is excludable if people can be prevented from using it.
Nonrival in Consumption: One person’s consumption does not reduce the availability for others.
Private Good: A good that is rival in consumption and excludable.
Nonexcludable: A good that people cannot be prevented from using.
Public Goods: Nonexcludable and nonrival in consumption (e.g., public sewer system).
Common Resources: Nonexcludable but rival in consumption (e.g., fish stocks).
Artificially Scarce Goods: Excludable but nonrival in consumption (e.g., on-demand TV).
Free Rider Problem: When people benefit from a good without paying for it.
Overuse: Excessive use of a common resource, leading to depletion.
Government Transfers: Payments by the government to individuals without requiring goods or services in return.
Poverty Programs: Programs designed to reduce poverty.
Social Insurance Programs: Programs providing protection against economic risks.
Means-Tested: Eligibility depends on income level.
In Kind: Benefits provided as goods or services rather than cash.
Medicare vs. Medicaid: Medicare provides healthcare for the elderly; Medicaid provides for low-income individuals.
Gini Coefficient: A measure of income inequality.
Marginal Product of Labor (MPL): The additional output produced by one more unit of labor.
Value of the Marginal Product (VMPL): Price times the marginal product of labor.
Shifters of the Factor Market Curve:
Change in price of goods.
Change in supply of other factors.
Change in technology.
Physical Capital: Machinery, buildings, and tools used in production.
Human Capital: Skills and knowledge of workers.
Land: Natural resources used in production.
Labor: Human effort used in production.
Marginal Productivity Theorem: Firms hire until the marginal product equals the marginal cost of labor.
Compensation Differentials: Wage differences based on job characteristics.
Work vs. Leisure: Tradeoff between earning income and enjoying free time.
Individual Labor Supply Curve: Shows how an individual’s labor supply changes with wages.
Shift of Labor Supply Curve:
Change in preferences or social norms.
Change in population.
Change in opportunities.
Change in wealth.
Marginal Revenue Product of Labor (MRPL): MPL times marginal revenue.
Monopsony: A market with a single buyer of labor.
Cost Minimization Rule: Firms hire factors in a way that minimizes cost for a given output.
Private Information: Information that one party in a transaction knows but the other does not.