
Intermediate Price Theory
Topic Outline and Learning Outcomes
Under each major heading is a list of concepts that will be covered. Assignments are made throughout - PR refers to your textbook. To perform well in this course you need to be able to explain and use each concept mentioned. I have included specific learning outcomes for each section under "Be able to: ..."
Markets and Prices
Review Links - These are developed for a Principles Class but provide a good review here
Deductive vs. Inductive Reasoning
Things are the way they are for a reason
Read: PR Chapter 1
Major Topics:
Positive Analysis
Normative Analysis
Markets
Market Price
Relative Prices
Property Rights
Transactions Costs
Hypotheses and Theories
Inductive and deductive theories
Nominal Price
Real Price
The CPI - Consumer Price Index
Be able to:
Explain the differences between positive and normative analysis
Explain the concept of relative price
Explain how and why market economy's require property rights
Explain how scientific theories are accepted or rejected
Explain the relationship between real and nominal prices
Convert nominal prices to real prices and vice versa
Read: PR Chapter 2.1, 2.2, 2.3
Major Topics:
Market equilibria
Shortages and Surpluses
Dependent vs. Independent Variables
Supply shift parameters
Demand shift parameters
Taxation
Be able to:
Explain how market price is determined
Show and explain the effects of shortages and surpluses
Explain dependent and independent variables in terms of the demand and supply
curves
List and use the major shift parameters for the demand curve
List and use the major shift parameters for the supply curve
Explain the effects of a tax on a market using consumer and producer surplus
analysis
A Brief Review of Basic Mathematics
Be able to:
Multiply and divide fractions
Calculate and explain slope
Interpret and use linear functions
Elasticity - Take good class notes -- your textbook is weak in this area
Read: PR Chapter 2.4 & pages 117-123
Major Topics:
General Concept of Elasticity
Price Elasticity or Ed
Ranges of elasticity's ( 0 < Ed < 1)
Point elasticity
Arc elasticity
Major determinants of Price Elasticity
Changes in Total Revenue and the Ed
Income Elasticity or Ey: Normal, luxury, necessity,
income independent, inferior goods
Cross-Price Elasticity or Ecp: Substitutes or Complements?
Read: PR 2.5, 2.6, 2.7
Short-run vs. long-run elasticity
An algebraic treatment of equilibrium
Price Controls
Be able to:
Interpret the calculated value of an elasticity
Explain the difference between point and arc elasticity's
Calculate point and arc elasticity's
Explain the effects of price elasticity on the total revenues of the firm
Calculate and interpret income elasticity's
Calculate and interpret cross elasticity's
Discuss the differences between SR and LR elasticity's
Solve for equilibrium quantity and price given a linear supply and demand
curve
Understand and explain the effects of price ceilings
Understand and explain the effects of price floors
Demand Theory
Read: PR 3.1
Major Topics:
Assumptions: completeness, transitivity, more is preferred to less
Indifference Curves (I-Curves)
Indifference Maps
Cardinal vs. Ordinal Rankings
The Marginal Rate of Substitution of X for Y (MRSXY) (Handout
#2)
MRSXY - the interpretation of slope
Preferences and the shapes of indifference curves
Strong preferences, neuter preferences, economic bads
Perfect and close substitutes
Perfect and close complements
Utility functions
Read: PR 3.2 through 3.5
Major Topics:
The Budget Constraint (BC)
Intercepts and slope Y = Px(Qx) + Py(Qy)
Manipulating the BC: changes in prices and income
Consumer Choice: Maximizing Consumer Satisfaction (equilibrium using I-curves
and BCs)
Corner Solutions
Revealed Preference
Marginal Utiltiy and Consumer Choice (Handout #3)
The Composite Commodity Theorem
Utility Theory, Marginal Utility and Consumer Choice
The Law of Diminishing Marginal Utility
Advantages of the I-Curve approach
Examples of I-Curve analysis:
Quantity discounts and a kinked budget constraint
Altruism
Food Stamps
Cash Payments vs. Fringe Benefits
Free Housing vs. Housing subsidy
Non-Wage income (work-leisure model)
Be able to:
Explain the assumptions behind the indifference curve
Explain why ordinal measures are used rather than cardinal preferences
Use indifference curves to reflect the preferences of an individual
Determine the MRSXY
Explain diminishing marginal rates of substitution for a good
Explain revealed preference and its implications
Use the composite commodity theorem to explain why money price is on the
vertical axis
Explain the relationship of utility theory to prices and the MRSXY
Apply BC's to reflect information in a word problem
Apply I-curves to reflect information in a word problem
Note: You will be asked to use I-curve analysis repeatedly in
this course
Read: PR 4.1
Major Topics:
Price-Consumption Curves (PCC)
Deriving the demand curve
Income-Consumption Curves (ICC)|
Normal and inferior goods
Engel Curves
Be able to:
Derive the individual's demand curve from her PCC
Derive the individual's engel curve from her ICC
Explain the terminolgy used in these concepts
Read: PR 4.2
Major Topics:
Income and Substitution Effects for normal, inferior, and giffen goods
Be able to:
Delineate between the income and substitution effects for a price
increase and a price decrease
Show the income and substitution effects for a normal good
Show the income and substitution effects for an inferior good
Show the income and substitution effects for a giffen good
Read: PR 4.3
Major Topics:
Market Demand
Read: PR 4.4
Major Topics:
Consumer surplus (CS)
Adam Smith and the Diamond-Water paradox
Read: PR 4.5
Major Topics:
Interdependent Demand Curves
The Bandwagon Effect
The Snob Effect
Be able to:
Explain how market demand curves are derived
Explain and use consumer surplus
Explain the Bandwagon effect
Explain the Snob effect
PRODUCTION, COSTS, PROFIT MAXIMIZATION, AND COMPETITIVE SUPPLY
PRODUCTION
Read: PR 6.1 & 6.2
Major Topics:
Describing technology: the production function
Isoquants and isoquant maps
Short-run vs. long-run production: fixed vs. variable inputs
Read: PR 6.3
Major Topics:
Production in the Short-run
A short-run production function (at least one fixed input)
The graphical representation of the production function - the Total Product
(TP) function
The Average Product of Labor (APL)
The Marginal Product of Labor (MPL)
Relationships among the APL and the MPL
The law of diminishing marginal returns and the SR
Read: PR 6.4
Major Topics:
Production in the Long-run
A long-run production function (no fixed inputs)
The Marginal Rate of Technical Substitution - MRTSKL
Choosing among inputs - achieving the same goal with different factor
mixes
Using isoquants and isocost curves
Read: PR 6.5
Major Topics:
Returns to Scale
Increasing, decreasing, and constant returns to scale
Be able to:
Explain the information required for a simple SR production function
Draw a SR production function. What variables are on the axes?
Determine the APL and MPL from TP information
Explain the relationship between the MPL and the APL
Define the Law of diminishing marginal returns (LDMRs)
Explain the effect of the LDMRs on the shape of the SR production curves
Clearly delineate the difference between the SR and the LR production
function
Calculate the MRTSKL
Explain substitution among inputs including how and why these substitutions
occur
Explain what is meant by a declining or diminishing MRTS. Why would this
occur in the SR but not in the LR?
Define and briefly explain types of returns to scale
Use isoquants to show returns to scale
COSTS
Read:PR 7.1
Major Topics:
Economic Costs
Accounting Costs
Opportunity costs
Implicit and explicit costs
Sunk Costs
Take good class notes on:
The explicit algebraic relationship between the production function
and the cost function
Read: PR 7.2
Major Topics:
Combining technology (the production function) and input costs
Costs in the Short-run
TC, FC, VC, ATC, AFC, AVC, MC
Determinants of the shape of the SR cost curves
Typical U-shaped SR cost curves
Read: PR 7.3
Major Topics:
Costs in the Long-run
TC, FC, VC, ATC, AFC,
AVC, MC
Isocost Lines
Intercepts and slope TC = PK(QK) + PL(QL)
Shifting the isocost line
Changes in total costs
Changes in input prices
Isocosts and Isoquants: Choosing your input mix
Cost minimization with given input prices
The Expansion Path
Read: PR 7.4
Major Topics:
Comparing and contrasting LR and SR cost curves
Changing the size (scale) of the plant itself
Returns to scale and the LRATC curve
Determination of the shape of the LR cost curves
Constructing the LRATC curve
Shifting the LRATC
Technology
Input prices
Read: PR 7.6
Major Topics:
Dynamic changes in costs
The learning curve
Now that we have derived the MPL and the APL from the total product curve and explained the relationships between each, it is our next charge to carry this over into the firms short-run and long-run cost relationships. There exist direct and specific relationships between production theory and cost theory; between the MPL, APL, and TPL curves mentioned above and the MC, AC, and TC curves. Use the following as a guideline to explain these relationships to yourself.
Be able to:
Define and explain the various definitions of costs in section
7.1
Explain the role of sunk costs in economic decision-making
Understand the conversion of a production information (which is purely
technological information) to cost information (which incorporates information
concerning input prices.)
What is the relationship between the TP curve and the TC curve?
What is the relationship between the APL curve and the AVC curve?
What is the relationship between the MPL curve and the MC curve?
Define and calculate SR costs: the ATC, AVC, AFC, & MC
Explain why SR cost curves are U-shaped
Explain an Isocost Line. What determines the slope of the isocost line?
What determines the position of the isocost line? What happens when the
PL, PK, or TC change? How is the isocost line different
than the Demand Theory's budget line?
What is meant by "the minimum cost input combination" ? How
does this relate to the expansion path?
Explain the derivation of the LRATC curve
Explain why LR cost curves are u-shaped
Show how changes in technology and input prices affect cost curves
Explain the Learning Curve
PROFIT MAXIMIZATION AND COMPETITIVE SUPPLY
Read: Class Handout and PR 8.1
Major Topics:
Goals of the firm (handout and class notes)
Profit Maximization
Ownership and control of the firm
Managerial consumption of leisure
Amenity maximization
Sales maximization
Internal controls
Governance structure
Proxy battles
Performance-based pay
External controls
Takeover
Competition
Financial capital markets
Read: PR 8.2
Major Topics:
Price-taking behavior
The assumptions of pure competition
Profit-maximizing firm behavior in competitive markets
Read: PR 8.3, 8.4, 8.5
Major Topics:
Output decisions in the Short-run
Profits in competitive markets: The SR
Zero economic profits
Economic profits or losses
The competitive firm's supply curve in the SR
The shutdown point
The competitive industry's supply curve in the SR
Industry Supply = firm's supplies
SR elasticity of supply
Producer surplus (PS)
Read: PR 8.6
Major Topics:
Output decisions in the Long-run (LR)
Profits in competitive markets: The LR
Long-run equilibrium
The crucial role of entry and exit
Market structure implications for cost and price minimization
Entry and economic rents
Read: PR 8.7
Major Topics:
Deriving the industry's LR supply curve
Increasing, constant, and decreasing cost industries
The Difference between SR and LR supply curves
Read: PR 8.8
Major Topics:
Contestable Markets (take good class notes)
Be able to:
Write a short essay on the goals of a firm and how economists
justify the use of profit maximization as the primary goal
Explain the importance of price taking behavior in competitive markets
List the assumptions of pure competition
Explain the SR output decision for a competitive firm
Derive the firm's SR supply curve
Derive the industry's SR supply curve
Define and explain producer surplus
Explain the LR output decision for a competitive firm
Explain LR equilibrium, LR profits, and the role of entry and exit in
the LR
Explain the effects of competitive markets on costs and prices
Derive a LR supply curve
Explain increasing cost, decreasing cost, and constant cost industries
Write a short essay on Contestable Markets
Analyzing Competitive Markets
Read: PR Chapter 9
Major Topics:
Review of consumer surplus and producer surplus
Welfare conditions under pure competition
Pareto-optimality
Using supply and demand curves as marginal benefit and marginal cost curves
Price Controls - an upper limit on price
Natural Gas
Rent Controls
Price Minimums - a lower limit on price
The Airline Industry under the CAB
Agricultural markets
Limiting entry in tobacco and peanut markets
Price supports
Production quotas
Import quotas and tariffs
Taxation
Subsidies
Read and Discuss the Hayek article
The competitive model as a benchmark
Be able to:
Show the distribution of CS and PS under competitive market conditions
Define pareto-optimality
Explain what effects we can expect if government sets price below the
equilibrium price
Explain what effects we can expect if government sets price above the
equilibrium price
Explain what effects price supports have on markets
Explain what effects production quotas have on markets
Explain the effects of a tax on a competitive market
Explain the effects of a subsidy on a competitive market
Be able to discuss the role of prices in a market economy (Hayek)
MARKET STRUCTURES - PURE MONOPOLY
Read: PR 10.1
Major Topics:
Price-making behavior
The assumptions of pure monopoly
Profit-maximizing firm/industry behavior in monopolized markets
Read: PR 10.2
Major Topics:
Some observations on monopoly
Mark-up pricing
The "disappearing" the supply curve
The effect of a tax on a monopolist
Operating in the elastic range of the demand curve
Measuring monopoly power
Monopoly and the "guarantee" of profit
The Lerner Index
Concentration Ratios (Class notes)
The Hirfindahl Index (Class notes)
Read: PR 10.3
Major Topics:
Sources of monopoly power
Read: PR 10.4
Major Topics:
Welfare costs of monopoly
Natural Monopoly
Regulating the natural monopolist
Marginal cost pricing versus Average cost pricing
Read: PR 10.7
Major Topics:
Antitrust Law
Be able to:
Explain the importance of price making behavior in monopoly markets
List the assumptions of pure monopoly
Discuss the profit-maximizing behavior of a monopolist
Discuss the pricing decision of the monopolist
Discuss the supply curve under monopoly
Discuss the relevant range of prices for a monopolist
Show how a tax could actually increase quantity offerings to the market
"Measure" monopoly power using the Lerner and Hirfindahl indices
Explain the major sources of monopoly
Explain the social or welfare costs of monopoly
Define a natural monopoly
Outline the pro's and con's of price regulation of a natural monopolist.
Be sure to clearly delineate between MC pricing and AC pricing.
The extraction of Consumer Surplus - Pricing decisions
Read: PR 11.1 & 11.2
Major Topics:
Price discrimination
Three necessary conditions
Types of price discrimination
First degree or Perfect price discrimination
Second degree or Block pricing
Third degree or Segmented market pricing discrimination
Read: PR 11.3
Intertemporal Price Discrimination and Peak-Load Pricing
Read: PR 11.4
The Two-Part Tariff
Read: PR 11.6 -SKIP SPRING 2004
Advertising
Be able to:
Explain why a firm would want to price discriminate
Outline the conditions necessary for price discrimination to be effective
Differentiate among 1st, 2nd, and 3rd degree price discrimination
Explain Intertemporal Price Discrimination
Explain Peak-Load Pricing
Explain how a firm must address the decision to advertise if it is going to
profit maximize-SKIP SPRING 2004
Monopolistic Competition
Read: PR 12.1
Major Topics:
Assumptions and Characteristics
SR equilibrium
Profits and Losses
LR equilibrium
"Excess Capacity" - the costs of differentiation
Comparison with pure competition
Advertising and the dynamic effects of product differentiation on cost curves
(Class Notes)
Be able to:
List the assumptions of monopolistic competition
Discuss the profit-maximizing behavior of a monopolistically competitive
firm
Discuss the SR pricing and output decision of a monopolistically competitive
firm
Discuss the LR pricing and output decision of a monopolistically competitive
firm
Explain the role of entry and exit in the LR
Define and explain the concept of excess capacity in the LR
Compare the monopolistically competitive firm to the competitive firm
Discuss the static and dynamic role of advertising
Oligopoly
Read: PR 12. 2 - 12.6
Major Topics:
Assumptions and Characteristics
Nash Equilibrium - define and explain
Cournot Equilibrium - define, explain, derive
Bertrand Equilibrium - define, explain, derive (homogeneous products only)
When to use Cournot and Bertrand Models
Competition vs. Collusion
The payoff matrix
The Prisoner's Dilemma
Implications of the Prisoner's Dilemnma for Oligopolisitic Pricing
Price Rigidity - Kinked demand curve model
Price leadership models by the low cost firm
Price leadership models by the dominant firm
Cartels and collusion
Formalized market coordination
Decisions required to form a cartel
Factors which make it easier to form a cartel
Why cartels fail
Informal market coordination
Be able to:
List the assumptions of oligopoly
Discuss the profit-maximizing behavior of an oligopolist
Discuss the SR pricing and output decision of an oligopolist
Discuss the LR pricing and output decision of an oligopolist
Define a Nash Equilibrium
Define, explain and derive a Cournot Equilibrium
Define, explain and derive a Bertrand Equilibrium
Conpare and contrast the uses of Cournot vs. Bertrand
Construct and use a payoff matric
Explain the Prisoner's Dilemma and use it in a payoff matrix analysis
Discuss the implications of the Prisoner's Dilemma for Oligopolistic Pricing
- "Schizophrenia Pricing"
Develop the kinked demand curve model to explain price rigidity
Develop a price leadership model based on the low cost firm
Develop a price leadership model based on the dominant firm
Define cartels and collusion
Outline the decisions which are required to form a cartel
Outline the factors which make it easier to form a cartel
Explain why cartels eventually fall apart
Game Theory and Competitive Strategy
Read: PR 13.1 - 13.9
Major Topics:
Gaming and Strategic Decisions
Dominant Strategies
The Nash Equilibrium Revisited
SKIP: Mixed Strategies
Repeated Games
Sequential Games
Threats, Commitments, and Credibility
Entry Deterence
Bargaining Strategy
Auctions
Be able to:
Explain the difference between cooperative and noncooperative games
Identify and explain dominant strategies in a payoff matrix
Show single and multiple Nash Equilibria in a payoff matrix
Explain the Nash Equilibrium in a beach location game
Identify and explain the maximin strategy in a payoff matrix
Explain how a repeated game affects choices (again using a payoff matrix)
Explain how a sequential game affects choices (again using a payoff matrix)
Explain why there is an advantage to moving first
Construct and use a payoff matric
Explain the Prisoner's Dilemma and use it in a payoff matrix analysis
Discuss the implications of the Prisoner's Dilemma for Oligopolistic Pricing
- "Schizophrenia Pricing"
Develop the kinked demand curve model to explain price rigidity
Develop a price leadership model based on the low cost firm
Develop a price leadership model based on the dominant firm
Define cartels and collusion
Outline the decisions which are required to form a cartel
Outline the factors which make it easier to form a cartel
Explain why cartels eventually fall apart
Disclaimer: The schedules and procedures in this course are subject to change in the event of extenuating circumstances.
Web page Last Updated on January 26, 2005
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© Bradley K. Hobbs, Ph.D. 2001. All written portions of
this work are those of Bradley K. Hobbs and his alone.
Intellectual property rights are claimed over my intellectual product (Read
"Capitalism" by Ayn Rand.)