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Principles of Microeconomics 3e

Key Terms

Principles of Microeconomics 3eKey Terms

Key Terms

behavioral economics
a branch of economics that seeks to enrich the understanding of decision-making by integrating the insights of psychology and by investigating how given dollar amounts can mean different things to individuals depending on the situation
budget constraint (or budget line)
shows the possible combinations of two goods that are affordable given a consumer’s limited income
consumer equilibrium
point on the budget line where the consumer gets the most satisfaction; this occurs when the ratio of the prices of goods is equal to the ratio of the marginal utilities.
diminishing marginal utility
the common pattern that each marginal unit of a good consumed provides less of an addition to utility than the previous unit
fungible
the idea that units of a good, such as dollars, ounces of gold, or barrels of oil are capable of mutual substitution with each other and carry equal value to the individual
income effect
a higher price means that, in effect, the buying power of income has been reduced, even though actual income has not changed; always happens simultaneously with a substitution effect
marginal utility
the additional utility provided by one additional unit of consumption
marginal utility per dollar
the additional satisfaction gained from purchasing a good given the price of the product; MU/Price
substitution effect
when a price changes, consumers have an incentive to consume less of the good with a relatively higher price and more of the good with a relatively lower price; always happens simultaneously with an income effect
total utility
satisfaction derived from consumer choices
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