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, from opportunity cost calculations to the terms of trade that make exchange mutually beneficial. See why specialization — not competition — drives gains from trade.
Barriers to Entry and Monopoly Formation
Unpack the structural, legal, and strategic forces that create and sustain monopolies — from natural monopolies and economies of scale to patents, resource control, and antitrust standards used to distinguish legal dominance from anticompetitive conduct.
Changes in Equilibrium Price and Quantity
Trace how shifts in supply and demand curves produce new equilibrium outcomes, covering price-quantity changes for single and simultaneous shifts — including when results stay ambiguous — so you can predict market changes without making common errors.
Changes in Equilibrium Price and Quantity the Four Step Process
Walk through the four-step process for predicting how demand and supply shifters — from input costs to consumer income — move equilibrium price and quantity. These examples clarify curve shifts versus movements along a curve and tackle simultaneous shifts where one outcome stays ambiguous.
Consumer Choices and Utility
Unpack how consumers maximize satisfaction through utility, marginal utility per dollar, and the utility-maximizing rule — covering diminishing marginal utility, budget constraints, and how price or income changes shift optimal consumption choices.
Demand, Supply, and Market Equilibrium
Master the core mechanics of microeconomic markets by tracing how the laws of demand and supply interact to set equilibrium price and quantity. Learn what shifts curves versus moves along them, and why surpluses and shortages self-correct through price adjustments.
Explicit Costs, Implicit Costs, and Profit
Break down the difference between explicit and implicit costs — including foregone wages, interest, and rental value — and see how accounting profit and economic profit diverge, and what it means when a firm earns normal profit.
How Perfectly Competitive Firms Make Output Decisions
Master the output decisions of perfectly competitive firms, from the MR = MC profit-maximizing rule to shutdown conditions and long-run equilibrium. This pack covers price-taking behavior, economic profit vs. loss scenarios, and why market entry and exit drive profit to zero.
Imperfect and Asymmetric Information
Unpack how imperfect and asymmetric information distort real markets, from Akerlof's lemons model and adverse selection to signaling, screening, and government disclosure rules that prevent market collapse.
Labor Market Supply and Demand
Unpack how wages and employment levels are determined by tracing labor supply and demand curves, derived demand, and equilibrium shifts driven by technology, skills, and consumer markets.
Market Efficiency and Surplus
Unpack the mechanics of consumer and producer surplus, total surplus, and allocative efficiency in competitive markets. See how price controls, taxes, and subsidies shift equilibrium and create deadweight loss by blocking mutually beneficial trades.
Measuring and Explaining Income Inequality
Unpack the tools economists use to measure and explain income inequality, from the Lorenz curve and Gini coefficient to the skills premium, globalization, and redistribution. Covers U.S. trends since the 1970s and the debate over income mobility.
Measuring Poverty
Break down how the U.S. measures poverty by comparing the official poverty measure and the supplemental poverty measure — including how each handles noncash benefits, taxes, and regional housing costs.
Monopolistic Competition
Unpack monopolistic competition by tracing how product differentiation, entry and exit, and the interplay of price, ATC, and MC shape firm behavior from short-run profit or loss to long-run zero-profit equilibrium — including excess capacity and the role of advertising.
Monopoly Pricing and Output Decisions
Master monopoly pricing by working through the MR = MC profit-maximization rule, the price-cost gap that drives deadweight loss, and how a monopolist reads the demand curve to set output and price above the competitive optimum.
Oligopoly
Unpack the strategic logic behind oligopoly markets — from Nash equilibria and the Prisoner's Dilemma to kinked demand curves, OPEC-style collusion, and the barriers that lock in market power — and see how these forces drive prices, output, and deadweight loss.
Perfect Competition
Master the mechanics of perfect competition — from price-taking firms and the MC = MR profit rule to short-run shutdown decisions and the long-run equilibrium where economic profit hits zero and both productive and allocative efficiency are achieved.
Pollution as a Negative Externality
Unpack how pollution creates a wedge between private and social costs, driving market overproduction beyond the efficient output level. Cover Pigouvian taxes, tradable permits, and command-and-control regulation — and why the socially optimal pollution level isn't zero.
Price Ceilings and Price Floors
Unpack how binding price ceilings and floors distort market equilibrium, creating shortages, surpluses, and deadweight loss — with real-world examples like rent control and minimum wage to connect theory to policy outcomes.
Price Elasticity of Demand and Supply
Master the mechanics of price elasticity by working through elastic vs. inelastic demand and supply, the midpoint method, key determinants like substitutes and time horizon, and how elasticity shapes total revenue outcomes.
Production Possibilities and Social Choice
Explore the production possibilities frontier, opportunity cost, and the law of increasing costs to understand what any economy can produce — and why social choice determines which efficient point on the PPF a society should actually pursue.
Public Goods
Unpack the defining properties of public goods — non-excludability and non-rivalry — and explore why free-rider problems cause markets to underprovide them.
Scarcity, Specialization, and the Study of Economics
Unpack the foundational concepts driving every economic decision, from scarcity and opportunity cost to specialization and the division of labor. This pack covers why unlimited wants clash with finite resources, how microeconomics differs from macroeconomics, and why models matter.
Shifts in Demand and Supply
Trace the full mechanics of demand and supply shifts — from income changes and input costs to government subsidies and taxes — and see exactly how each factor moves equilibrium price and quantity, including what happens when both curves shift at once.
Short-Run Production Costs
Break down the key cost curves in short-run production, from total fixed and variable costs to the U-shaped AVC and ATC curves. See why marginal cost rises due to diminishing returns and how it intersects average cost curves at their minimums to reveal the most efficient output level.