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Econ 002 - Overall
Definitions
46
Economics
Undergraduate 1
05/08/2007

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Term
Efficient Market Hypothesis
Definition
theory that markets combine all available information into the current price
Term
Asymmetric Information
Definition
imbalances in the information when one party knows more than the other
Term
Adverse Selection
Definition
arises whenever those who are the worst risks are the ones most likely to be a part of a transaction

EX- prevents lenders from making loans, dating services
Term
Moral Hazard
Definition
occurs because of a change in behavior AFTER a transaction or policy is completed

EX- Insurance, Loans (paying off debts)
Term
Principal Agent Problem
Definition
a conflict exists between agents charged with carrying out the wishes of absentee owners (own objectives over firms principals & goals)

EX- travelling first class, company vehicles, extravagant expense accounts
Term
Eliminate Adverse Selection
Definition
get more information

EX- mechanic look at the used car first
Term
Eliminate Moral Hazard
Definition
fix incentive structure

EX- require collateral for a loan
Term
Eliminate Principal-Agent
Definition
make more frequent observations
Term
Positive Time Preference
Definition
spending more than your income
Term
Negative Time Preference
Definition
when you save a portion of your income for future consumption
Term
Interest Rate
Definition
price of borrowing
Term
Pure Rate of Interest
Definition
the price of earlier availability
Term
Positive Pure Rate of Interest
Definition
more positive time preference users than negative time preference
Term
Risk Premium
Definition
the price you pay to compensate the lender for the risk of you paying of the loan
Term
Inflationary Premium
Definition
the price you pay to compensate the lender for the change in prices between the time you borrow the funds and when you payoff the loan
Term
Risk Aversion
Definition
taking the sure thing even when it pays less
Term
Preference Reversal
Definition
risk tolerance changes from risk aversion to risk taking
Term
Proprietorships
Definition
easy to form and dissolve, simple decision making, profit is taxed once

unlimited liability
Term
Unlimited Liability
Definition
owner of firm is personally responsible for all debts
Term
Partnerships
Definition
easy to form, relatively easy to dissolve, simple decision making, profit is taxed once

permits more effective specialization
Term
Corporations Advantages
Definition
1) Persons own share in company
2) Limited Liability
3) Can raise large sums of money
Term
Corporations Disadvantages
Definition
1) Double Taxation
2) Separation of ownership and control
Term
The Law of Diminishing Returns
Definition
an increased number units of a variable factor in the production process are applied to a fixed set of resources, output will eventually increase by smaller and smaller amounts
Term
Minimium Efficient Scale (MES)
Definition
the lowest rate of output per unit time at which long-run average costs for a particular firm are at a minimum
Term
Small MES
Definition
high degree of competition due to low barriers to entry
Term
Large MES
Definition
less competition and often time high prices
Term
Sunk Costs
Definition
costs that have already been incurred as a result of past decisions.

historical costs that are irrelevant because they are no longer an opportunity cost
Term
Sunk Cost Trap
Definition
attachment to existing item that prevents you from switching to a newer, better option
Term
Markets
Definition
study of how society is organized

provide incentives to produce goods and services that others want
Term
What does it take to create Pure Competition?
Definition
1) The firms in the market produce identical products

2)A large number of firms exist in the market

3)Each firm supplies only a very small portion of the market

4)Firms are free to enter and leave the market
Term
Profit Maximizing Rule
Definition
the price taker will expand output until marginal revenue is just equal to the marginal cost
Term
MR=MC
Definition
condition for stopping production at the point where profit opportunities no longer exist
Term
MR>MC
Definition
production continues to be profitable and firm should expand production
Term
MR
Definition
firm is producing too much
Term
Production Efficiency
Definition
occurs whenever the firm producces at the level consistent to the minimum point on the ATC curve
Term
Allocative Efficiency
Definition
occurs when the price charged is equal to the MC of production
Term
Invisible Hand
Definition
the idea that markets serve the common good
Term
Monopoly
Definition
a market that is a single seller who produces a well-defined product for which there are no good substitutes.
Term
Barriers to Entry
Definition
1) Ownership of resources without close substitutes

2) Problems raising adequate capital

3) Economies of scale
- low unit costs and prices drive out rivals
Term
Price Discrimination
Definition
exists when a business sells a given prodcut at more than one price with difference being unrelated in difference in cost
Term
Rent-Seeking
Definition
competing to become a monopolist

resources will be wasted in attempt to secure and maintain grants of market protection
Term
Solutions to Monopoly
Definition
1) Restructure the industry in order to create rivals

2) Reduce trade barriers

3) Regulate Producers with monopoly power
Term
Random Walk Theory
Definition
The theory that there are no predictable trends in stock prices that can be used to "get rich quick".
Term
Inside Information
Definition
information that is not available to the general public about what is happening in a corporation
Term
Present Value
Definition
the value of a future amount expressed in today's dollars
Term
Present Value Equation
Definition
___ = Future Value/ 1 + interest rate (i)
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