C7 - Definitions Flashcards
Utility
The satisfaction received from consumption of goods or services.
Total utility
Total satisfaction received from consumption.
Marginal utility
Utility derived from the consumption of one more unit of good or service.
Positive marginal utility
When the consumption of an additional item increases the total utility.
Negative marginal utility
When the consumption of an additional item decreases the total utility.
Diminishing marginal utility
Fall in marginal utility as consumption increase.
Equimarginal principle
Consumer maximise their utility where their marginal valuation for each product consumed is the same.
Budget line
The combinations of 2 products obtainable with given income and prices.
Indifference curve
Shows the different combinations of two goods that give a consumer equal satisfaction.
Income effect
The income effect is the change in a good’s consumption brought by a change in real purchasing power.
Substitution effect
The substitution effect is the change in a good’s consumption associated with a change in the relative price of the good, with the level of utility constant.
Behavioural economics
A branch of economics that builds on the psychology of human behaviour in decision making.
Marginal rate of substitution
The rate at which a consumer is willing to give up amount of other good to obtain one extra unit of the good in question without affecting total satisfaction.
Consumer optimal point of consumption
Where the budget line touches or is at tangent to the indifference curve.
Giffen good
Demand falls as the price of the good falls and demand increases as the price increases.
Economic efficiency
Scarce resources are used in the most efficient way to produce maximum output.
Productive efficiency
Firm is producing using least possible resources and at the lowest possible cost. (lowest point on ATC curve)
Allocative efficiency
Firms are producing goods and services most wanted by consumers. (P = MC)
Pareto optimality
Not possible to make someone better off without making someone else worse off. (Resources are allocated in the most efficient way)
Dynamic efficiency
A form of productive efficiency that benefits a firm over time.
Market failure
A market failure is a situation where free markets fail to allocate resources efficiently.
Private costs
Costs that incrred by an individual who produces a good or service.
External costs
Those costs incurred and paid for by third parties not involved in the action.
Social costs
Total costs of a particular action.
Private benefits
Monetary gain or other forms of benefits that an individual or producer receives from consuming or producing goods or services.
External benefits
Benefits that are received by third parties that are not involved in the transaction.
Social benefits
Total benefits arising from a particular action.
Externalities
Actions of producers or consumer give rise to side effects on third parties who are not involved in the actions.
Negative externality
Production or consumption of a good or service that results a cost to third party.
Negative production externaltiies
Negative externality that arise from production activity.
Negative consumption externalities
Negative externality that arise from consumption of a good or service.
Positive production externalities
Benefits that third party enjoy that are created by producers of goods and services.
Positive consumption externalities
Positive externalities that arise from consumption of a good or service.
Asymmetric information
Occurs when one party in the market, usually the seller, has some information that the other party, usually the buyer, does not have.
Adverse selection
Hidden characteristics, when only one party knows more about a situation than the other party.
Moral hazards
Hidden actions, when one party takes actions that the other party cannot observe but which affect both of them.
Cost-benefit analysis
A method that assess the desirability of a project which takes into account of all costs and benefits (including social costs and social benefits)
Shadow price
One that is applied where there is no recognized market price available.
Isoquant
A curve showing the possible combinations of 2 factors of production that can be used to produce the same level of output.
Short run
Time period when at least one factor of production is in fixed supply.
Total product
Total output of a firm.
Marginal product
The change in output arising from the use of an additional factor of production.
Production function
Graph that shows the maximum possible output from a given set of factor inputs.
Negative marginal returns
No returns plus decrease overall output.
Increasing marginal returns
The addition of a variable input to a fixed input enables the variable input to be more productive.
Diminishing marginal returns
Output from an additional unit of input leads to fall in marginal product.