Economics Microeconomics
Microeconomics examines how individuals, firms, and markets make decisions under scarcity, covering supply and demand, cost and production theory, market structures from perfect competition to monopoly, game theory, labor markets, and market failures including externalities and public goods.
Who Should Take This
Ideal for high school students in AP Economics, first-year college students taking Principles of Microeconomics, and anyone building a foundational understanding of how markets work and where they fail. Basic algebra is sufficient; no prior economics background is required.
What's Included in AccelaStudy® AI
Adaptive Knowledge Graph
Practice Questions
Lesson Modules
Console Simulator Labs
Exam Tips & Strategy
13 Activity Formats
Course Outline
1Foundations: Scarcity, Choice, and Trade-offs 8 topics
Define scarcity and explain how unlimited wants combined with limited resources force individuals, firms, and governments to make choices that involve opportunity costs
Apply the production possibilities frontier model to illustrate opportunity cost, economic efficiency, the law of increasing opportunity cost, and the difference between productive efficiency and points inside or outside the frontier
Apply comparative advantage to explain why individuals and nations specialize and trade, distinguishing it from absolute advantage and demonstrating how mutual gains from trade arise even when one party is more efficient at producing all goods
Analyze how the interaction of self-interest and market prices coordinates decentralized economic decisions and evaluate when markets produce efficient outcomes and when intervention may be warranted
Apply the concept of sunk costs to explain why rational decision-making should be based only on marginal costs and benefits going forward and why people irrationally weight past expenditures when making current decisions
Describe the concept of rational self-interest in economics and distinguish it from selfishness, explaining how Adam Smith's invisible hand metaphor captures how individual pursuit of gain, guided by market prices, coordinates economic activity toward socially beneficial outcomes
Apply marginal analysis to economic decision-making by explaining why decisions are made at the margin and demonstrating how individuals should continue any activity as long as marginal benefit exceeds marginal cost, stopping at the point where MB equals MC
Analyze how behavioral economics challenges the rational actor model by documenting cognitive biases including loss aversion, anchoring, present bias, and framing effects, and evaluate the implications for market outcomes and the design of policy nudges
2Supply, Demand, and Market Equilibrium 12 topics
Describe the law of demand including the inverse price-quantity relationship, the substitution and income effects, the distinction between a change in quantity demanded and a shift in the demand curve, and the five non-price demand shifters
Describe the law of supply including the direct price-quantity relationship, the distinction between quantity supplied and supply, and the six non-price supply shifters including input costs, technology, and number of sellers
Apply the supply-and-demand model to determine equilibrium price and quantity, predict how shifts in supply or demand change equilibrium outcomes, and correctly identify surplus and shortage conditions and the price adjustment mechanism
Calculate and interpret price elasticity of demand including the midpoint method, the elastic and inelastic classification, unit elasticity, and how elasticity determines whether a price increase raises or lowers total revenue
Apply income elasticity of demand and cross-price elasticity of demand to classify goods as normal versus inferior and as substitutes versus complements and use these classifications to predict demand responses to income or related-price changes
Apply consumer surplus and producer surplus to measure welfare gains from market exchange, represent them on supply-and-demand diagrams, and explain how total surplus equals the sum of consumer and producer surplus at competitive equilibrium
Analyze how price controls create deadweight loss by comparing the welfare effects of price ceilings (rent control, below-equilibrium price) and price floors (minimum wage, above-equilibrium price) including effects on consumer surplus, producer surplus, and shortages or surpluses
Analyze tax incidence using supply and demand to determine how an excise tax is shared between consumers and producers based on the relative elasticities of supply and demand and calculate the resulting deadweight loss
Apply the concept of price elasticity of supply by calculating it, distinguishing elastic from inelastic supply, explaining why time horizon matters for supply elasticity, and using it to predict how supply-side shocks affect prices and quantities
Apply double-shift analysis to predict the direction of equilibrium price and quantity changes when both supply and demand shift simultaneously and identify cases where the direction of one variable is indeterminate without knowing relative magnitudes
Describe the concept of market power and its sources including patents, brand loyalty, control of a scarce resource, and network effects, and explain how market power enables firms to set prices above marginal cost and earn economic profit in the long run
Apply the concept of speculative bubbles to financial and goods markets by explaining how extrapolative expectations and herding behavior can drive prices far above fundamental value and evaluate the role of market psychology in amplifying price cycles
3Production, Costs, and Firm Behavior 9 topics
Describe the short-run production function including total product, marginal product, and average product, explain the law of diminishing marginal returns, and sketch the typical total and marginal product curves
Distinguish fixed costs, variable costs, total cost, marginal cost, average fixed cost, average variable cost, and average total cost, and explain the relationship between marginal cost and average total cost curves
Apply the profit-maximization rule MR=MC to determine the optimal output level for any firm structure and use it to calculate profit, loss, or break-even position given total revenue and total cost data
Apply the shutdown condition to determine whether a firm in the short run should produce at a loss or shut down by comparing price to average variable cost and minimum AVC
Describe long-run cost behavior including economies of scale, diseconomies of scale, minimum efficient scale, and the long-run average total cost curve, and explain how these determine natural monopoly conditions
Analyze how the relationship between short-run marginal cost and long-run average cost determines a firm's optimal plant size and explain why long-run supply is more elastic than short-run supply across different market structures
Apply the concept of economic profit versus accounting profit to explain why zero economic profit in long-run competitive equilibrium is not a bad outcome for firms, since it means they are earning normal returns on all resources including owner-supplied capital
Apply isoquant and isocost analysis to explain how a cost-minimizing firm selects the optimal combination of labor and capital and explain how changes in input prices shift the optimal input mix toward the relatively cheaper factor
Apply the concept of economies of scope to explain how a firm can reduce average costs by producing multiple products jointly rather than separately — when shared inputs, distribution networks, or brand equity make joint production cheaper — and distinguish economies of scope from economies of scale
4Market Structures 12 topics
Describe perfect competition including conditions of many small firms, homogeneous products, free entry and exit, and perfect information, and explain why the perfectly competitive firm is a price taker with a horizontal demand curve
Apply the long-run equilibrium analysis of perfect competition to explain why economic profit is zero in the long run, how entry and exit restore equilibrium, and how the long-run industry supply curve is derived
Describe monopoly market structure including barriers to entry, downward-sloping demand, marginal revenue below price, profit-maximizing output at MR=MC, and the welfare loss from monopoly pricing relative to competitive outcomes
Apply price discrimination analysis to explain how a monopolist can increase profit by charging different prices to different consumer groups, identify the conditions required for price discrimination, and calculate welfare effects under first-degree price discrimination
Describe monopolistic competition including many firms with differentiated products, relatively free entry, the short-run excess profit equilibrium, and the long-run zero-profit equilibrium where the demand curve is tangent to ATC
Describe oligopoly market structure including a small number of large firms, strategic interdependence, price rigidity, and the kinked demand curve model, and explain why oligopolists have incentives to collude but face prisoner's dilemma pressures to defect
Apply game theory to analyze the prisoner's dilemma in oligopoly, identify dominant strategies and Nash equilibria, and explain why rational self-interest often leads oligopolists to compete rather than cooperate even when cooperation would maximize joint profit
Analyze the efficiency comparison across market structures by evaluating how perfect competition achieves allocative and productive efficiency while monopoly and monopolistic competition create deadweight loss through output restriction and excess capacity respectively
Describe antitrust policy and regulation of monopoly power including the rationale for antitrust law, natural monopoly regulation through price caps or rate-of-return regulation, and the trade-off between monopoly deadweight loss and potential economies of scale
Apply contestable markets theory to explain why even industries with few firms may behave competitively when there are no barriers to entry and exit and evaluate the policy implication that market structure alone does not predict competitive outcomes
Describe limit pricing and predatory pricing as strategic oligopoly behaviors where established firms set prices low enough to deter entry or drive out rivals and evaluate the antitrust challenges in distinguishing these strategies from legitimate competitive pricing
Apply the two-part tariff pricing strategy to explain how a monopolist with market power can extract additional consumer surplus by charging an entry fee equal to consumer surplus plus a per-unit price equal to marginal cost, improving efficiency while maximizing profit
5Market Failures and Government Intervention 10 topics
Define externalities and distinguish between negative externalities (overproduction relative to social optimum, e.g., pollution) and positive externalities (underproduction relative to social optimum, e.g., education), and illustrate both using social cost and social benefit curves
Apply Pigouvian taxes and subsidies to correct externalities by explaining how a per-unit tax on a negative externality shifts supply to internalize the social cost and how a subsidy on a positive externality shifts demand or supply toward the socially optimal quantity
Describe public goods by explaining the non-excludable and non-rival properties, why the free-rider problem prevents private markets from providing them efficiently, and why government provision or funding is typically required
Apply the Coase theorem to explain how private bargaining can internalize externalities without government intervention when property rights are well-defined and transaction costs are low, and identify the real-world limits of this approach
Describe information asymmetry including the adverse selection problem in markets such as health insurance and used cars and the moral hazard problem when one party has reduced incentives to take care due to insurance or guarantees
Describe the tragedy of the commons using common-pool resources such as fisheries or groundwater and explain how the absence of property rights leads to overuse and how regulation, privatization, or community governance can address the problem
Analyze the tradeoffs in government intervention to correct market failures by evaluating the welfare gains from correcting externalities against the risks of government failure, regulatory capture, and unintended consequences from poorly designed policies
Apply market-based environmental policy tools by comparing carbon taxes, cap-and-trade permit systems, and command-and-control regulation on efficiency, distributional equity, administrative cost, and incentive to innovate beyond compliance
Describe club goods and impure public goods including toll goods that are non-rival but excludable such as cable television and national parks, and explain the mixed provision arrangements that blend market pricing with public provision for these intermediate cases
Apply Akerlof's lemons model to explain how adverse selection in markets for used cars and health insurance occurs when sellers have more information than buyers, how this information asymmetry drives high-quality goods out of the market, and how signaling mechanisms like warranties and credentials can partially restore market efficiency
6Labor Markets and Income 9 topics
Apply marginal revenue product theory to explain how profit-maximizing firms hire workers up to the point where MRP equals the wage rate and illustrate how the MRP curve serves as the firm's labor demand curve
Describe monopsony in labor markets where a single employer has wage-setting power, explain why monopsony leads to wages below competitive levels and employment below the socially optimal level, and identify industries where monopsony power is common
Analyze the economic effects of the minimum wage by applying labor market supply and demand analysis to predict unemployment in a competitive market and explain why the employment effects in a monopsony market can differ substantially from the competitive prediction
Apply human capital theory to explain why wages differ across workers by explaining how education, training, and experience raise marginal productivity, and evaluate the private and social returns to investing in human capital
Describe compensating wage differentials to explain why wages for dangerous, unpleasant, or high-skill jobs exceed wages for pleasant or low-skill alternatives and use this framework to evaluate whether wage inequality reflects market efficiency or structural unfairness
Analyze the economic effects of labor unions by evaluating their role in raising wages above competitive levels for members, the potential spillover effects on non-union wages, and the trade-off between union wage gains and employment levels
Apply discrimination theory to explain the economic sources of wage gaps between demographic groups including taste-based discrimination, statistical discrimination, and occupational segregation, and evaluate how anti-discrimination laws and signaling can address each source
Describe the gig economy and platform labor markets including how apps like Uber and Taskrabbit shift risk and flexibility onto workers, the misclassification debate over employee versus contractor status, and the implications for labor market regulation
Describe the principal-agent problem in labor markets where the interests of employers (principals) and employees (agents) diverge and explain how incentive structures including piece rates, efficiency wages, profit sharing, stock options, and monitoring costs can align agent behavior with principal objectives
Scope
Included Topics
- Scarcity, choice, opportunity cost, and the production possibilities frontier; supply and demand model (demand shifters, supply shifters, law of demand, law of supply); market equilibrium and price adjustment; price elasticity of demand and supply, income elasticity, cross-price elasticity; consumer surplus and producer surplus; welfare analysis and deadweight loss; production theory (short run vs. long run, total/marginal/average product, law of diminishing returns); cost theory (fixed costs, variable costs, total cost, marginal cost, average total cost, economies of scale); market structures (perfect competition: profit maximization at MR=MC, shutdown condition, long-run equilibrium; monopoly: price-setting power, deadweight loss, natural monopoly; monopolistic competition: product differentiation, excess capacity; oligopoly: interdependence, price rigidity, cartel behavior); game theory basics (prisoner's dilemma, dominant strategy, Nash equilibrium); labor markets (marginal revenue product, monopsony, minimum wage effects); market failures (negative and positive externalities, Pigouvian taxes and subsidies, public goods and free rider problem, common-pool resources and the tragedy of the commons, information asymmetry); price controls (price ceilings and floors, rent control, minimum wage as price floor); tax incidence (consumer vs. producer burden, elasticity's role in incidence)
Not Covered
- Macroeconomic aggregates GDP, inflation, and monetary policy (covered in Economics Macroeconomics)
- Advanced econometrics and quantitative modeling
- International trade theory beyond basic comparative advantage
- Financial derivatives and advanced capital markets
Ready to master Economics Microeconomics?
Adaptive learning that maps your knowledge and closes your gaps.
Enroll