Microeconomics
Review Microeconomics study guides, quizzes, and flashcards covering supply and demand, market structures, and elasticity.
Topics
Absolute and Comparative Advantage
Unpack the logic behind absolute and comparative advantage — two foundational microeconomic concepts that explain why specialization and trade benefit all parties. This pack walks through opportunity cost calculations along the production possibilities frontier, showing why a producer with absolute advantage in every good still gains from trading. Master the reasoning behind international trade and why nations import what they could produce themselves.
Barriers to Entry and Monopoly Formation
Unpack the mechanisms behind monopoly formation by examining natural, legal, and strategic barriers to entry — from economies of scale and resource control to patents, government licensing, and network effects. This pack also covers natural monopoly theory, how patent law trades short-term market power for innovation, and the Sherman Act's distinction between lawful dominance and exclusionary conduct.
Changes in Equilibrium Price and Quantity
Trace how shifts in supply and demand curves move markets to a new equilibrium price and quantity. This pack walks you through the four-step analytical process, covers determinants like input costs, consumer income, and related goods prices, and tackles simultaneous shifts where one outcome stays ambiguous. Ideal for mastering predictable market outcomes before your next micro exam.
Changes in Equilibrium Price and Quantity the Four Step Process
Walk through the four-step process for analyzing shifts in market equilibrium, covering how rightward and leftward movements in demand and supply curves affect equilibrium price and quantity. This pack breaks down single and simultaneous curve shifts, including cases where one outcome becomes ambiguous, giving you a reliable framework for predicting market changes on exams.
Consumer Choices and Utility
Unpack the logic behind everyday consumer decisions by working through core microeconomic concepts like marginal utility, diminishing returns, and the utility-maximizing rule. This pack covers how budget constraints and price changes drive substitution and income effects, and why opportunity cost shapes rational choice. If your exam covers why consumers buy what they buy, this pack has you covered.
Demand, Supply, and Market Equilibrium
Master the core mechanics of how markets work by tracing the laws of demand and supply, the logic behind downward- and upward-sloping curves, and the forces that push prices toward equilibrium. This pack covers surpluses, shortages, and how shifts driven by income, preferences, input costs, and technology establish a new equilibrium price and quantity.
Explicit Costs, Implicit Costs, and Profit
Break down the distinction between explicit and implicit costs and see how each feeds into accounting profit versus economic profit. This pack covers opportunity costs, normal profit, and why economic profit is always less than or equal to its accounting counterpart — giving you the full picture economists use to judge whether a firm is truly using its resources efficiently.
How Perfectly Competitive Firms Make Output Decisions
Master the output decisions facing perfectly competitive firms, from price-taking behavior and the MR = MC profit-maximizing rule to shutdown conditions and short-run supply. This pack breaks down how market price compares to average variable cost and average total cost to determine whether a firm earns profit, breaks even, or minimizes losses.
Imperfect and Asymmetric Information
Unpack the economics of hidden information by working through adverse selection, moral hazard, signaling, and screening — including Akerlof's famous lemons model. This pack clarifies how information gaps between buyers and sellers distort markets and examines real-world solutions like warranties, licensing, and disclosure requirements. Ideal for students tackling information asymmetry on exams or problem sets.
Labor Market Supply and Demand
Examine how wages and employment levels are determined through the interaction of labor supply and demand curves, including why the demand curve slopes downward based on marginal revenue product and why higher wages draw more workers into the market. Explore the key forces that shift each curve — from technology and productivity to population changes — and see how wage floors like minimum wage laws create unemployment by pushing wages above equilibrium.
Market Efficiency and Surplus
Unpack the mechanics of consumer and producer surplus, and trace how total surplus reaches its peak at competitive equilibrium. Examine how price ceilings, price floors, and output deviations create deadweight loss by blocking mutually beneficial trades. This pack is ideal if you need to master allocative efficiency and the Pareto criterion for your microeconomics course.
Measuring and Explaining Income Inequality
Unpack the tools economists use to measure and explain income inequality, from constructing Lorenz curves and interpreting Gini coefficients to tracing the structural forces behind rising U.S. inequality since the 1970s. This pack covers skill-biased technological change, globalization, declining unionization, and the redistributive effects of taxes and transfers, while distinguishing between inequality of outcomes and inequality of opportunity.
Measuring Poverty
Unpack the key methods economists use to define and quantify poverty, from Mollie Orshansky's original food-based threshold to the Supplemental Poverty Measure's broader accounting of non-cash benefits and necessary expenses. This pack covers absolute vs. relative poverty, how thresholds differ from federal guidelines, and why poverty rates vary across demographic groups — giving you the full picture for your microeconomics exam.
Monopolistic Competition
Unpack the defining features of monopolistic competition, from short-run profit and loss scenarios to the long-run zero-economic-profit equilibrium driven by free entry and exit. Examine how product differentiation, branding, and advertising shape each firm's downward-sloping demand curve, and explore why the excess capacity result leaves firms allocatively inefficient at long-run equilibrium.
Monopoly Pricing and Output Decisions
Unpack how a monopolist sets price and output by working through the MR = MC rule, the gap between price and marginal cost, and the resulting deadweight loss. This pack covers why marginal revenue falls below price, how economic profit persists behind barriers to entry, and why monopoly output falls short of the socially efficient quantity — key distinctions from perfect competition you'll need to know.
Oligopoly
Unpack the strategic dynamics that define oligopoly, from the prisoner's dilemma and collusion instability to the kinked demand curve and price rigidity. This pack covers barriers to entry, cartel behavior, and how interdependence shapes firm decisions — giving you the core models and concepts you need to confidently analyze oligopolistic market structures on your next exam.
Perfect Competition
Master the mechanics of perfect competition by working through price-taking behavior, the MC = MR profit-maximization rule, and the short-run shutdown condition. This pack covers how free entry and exit drive markets toward long-run equilibrium where P = MC = minimum ATC, achieving both allocative and productive efficiency — the benchmark economists use to evaluate real-world market structures.
Pollution as a Negative Externality
Unpack the economics of pollution as a negative externality, from the gap between marginal private and marginal social cost curves to the graphical shift toward socially optimal output. This pack covers key policy tools — Pigouvian taxes, cap-and-trade, and command-and-control regulation — and explains why the socially optimal pollution level is rarely zero.
Price Ceilings and Price Floors
Break down how price ceilings and price floors distort markets by examining binding versus non-binding controls, the shortages and surpluses they create, and the deadweight loss that results from each. This pack covers surplus redistribution between consumers and producers alongside real-world examples like rent control, agricultural price supports, and the federal minimum wage.
Price Elasticity of Demand and Supply
Master the mechanics of price elasticity by working through both demand and supply responsiveness, elastic versus inelastic classifications, and the midpoint method for accurate calculations. This pack covers key determinants like substitutes, necessity versus luxury status, and time horizons, then connects elasticity directly to tax burden distribution and the often-surprising relationship between price changes and total revenue.
Production Possibilities and Social Choice
Unpack the production possibilities frontier and the trade-offs it reveals about resource allocation, opportunity cost, and economic growth. This pack covers why the PPF bows outward due to the law of increasing opportunity cost, how technological advances shift the curve, and the distinction between productive and allocative efficiency — everything you need to understand how societies make collective choices about what to produce.
Public Goods
Unpack the economics of public goods by mastering the two defining properties — non-excludability and non-rivalry — and tracing how they give rise to the free-rider problem and market failure. This pack covers government provision through taxation, cost-benefit analysis, and the full four-category taxonomy distinguishing public goods, private goods, common resources, and club goods.
Scarcity, Specialization, and the Study of Economics
Unpack the foundational principles driving all economic thinking, from scarcity and opportunity cost to specialization and trade. This study pack covers how finite resources — land, labor, capital, and entrepreneurship — force choices, how the production possibilities frontier illustrates those trade-offs, and how positive versus normative analysis shapes economic reasoning at the individual, firm, and societal level.
Shifts in Demand and Supply
Trace the forces that move entire demand and supply curves — not just prices — and learn to distinguish a true curve shift from a movement along it. This pack covers all six demand shifters and key supply shifters, from input costs and technology to consumer expectations, showing how each affects equilibrium price and quantity.
Short-Run Production Costs
Break down the key cost curves shaping short-run production decisions, including total fixed and variable costs, marginal cost, and the U-shaped average total cost curve. Understand why diminishing marginal returns drive marginal cost upward and why MC intersects AVC and ATC at their minimum points. This pack covers exactly what you need to master short-run cost analysis in microeconomics.