Lecture 2 Flashcards
Indifference curve
A representation of the combinations of two goods that provide equal satisfaction to a consumer.
Individual demand curve
A curve showing the quantity of a good that a single consumer will buy at each price.
Price elasticity of demand
A measurement of how much the quantity demanded of a good changes when its price changes.
Income elasticity of demand
A measurement of how the quantity demanded of a good changes with a change in consumer income.
Substitution effect
The change in consumption of a good due to a change in its price, while maintaining the same utility level.
Normal good
A good for which demand increases when income increases.
Inferior good
A good for which demand decreases as consumer income increases.
Marginal product
The additional output produced when one more unit of an input is added.
Production function
A function that shows the maximum output a firm can produce with given inputs.
Isoquant
A curve that represents all combinations of inputs that produce the same level of output.
Price-consumption curve
A curve showing the utility-maximizing combinations of two goods as the price of one changes.
Income-consumption curve
A curve that shows how consumption of goods changes as consumer income changes.
Engel curve
A curve that relates the quantity of a good consumed to the consumer’s income.
Substitutes
Goods where an increase in the price of one leads to an increase in the demand for the other.
Complements
Goods where an increase in the price of one leads to a decrease in the demand for the other.
Giffen good
A good for which demand increases when its price rises, due to the income effect outweighing the substitution effect.
Consumer surplus
The difference between what a consumer is willing to pay for a good and the amount they actually pay.
Network externality
A situation where the demand for a good is affected by how many other people purchase or use it.
Bandwagon effect
A positive network externality where consumers purchase a good because others are doing so.
Snob effect
A negative network externality where consumers desire a good because it is exclusive or rare.
Substitution effect (Income and Substitution Effects)
The change in the quantity of a good consumed as its price changes, while utility is held constant.
Income effect (Income and Substitution Effects)
The change in the quantity of a good consumed resulting from a change in consumer purchasing power due to a change in income.
Total effect
The overall change in consumption of a good due to both substitution and income effects combined.
Market demand curve
A curve that shows the total quantity of a good that all consumers in a market will buy at each price.
Elastic demand
A situation where a small change in price leads to a large change in quantity demanded (elasticity > 1).