Microeconomics Ch. 9

  1. Utility
    The enjoyment or satisfaction that people receive from consuming goods and services. (most economists say that the more you consume of a good the lower the utility is from a good)
  2. Util
    an artificial construct used to measure utility (can’t compare utils interpersonally)
  3. Marginal Utility
    • the additional utility a person receives from consuming one additional unit of a good or service.
    • MU = ΔTotal Utility/ ΔQ
  4. Law of Diminishing Marginal Utility
    the marginal utility will decrease as the additional successive units of a good are consumed.
  5. Income Effect
    the quantity demanded from a change in purchasing power due to a change in the good’s price, ceteris paribus. (compares 2 goods in absolute terms)
  6. Substitution Effect
    change in quanitity demanded from a change in its own price, making the good relatively more or less expensive to others (holding constant the effect of the price change on purchasing power). (compared before and after with relative terms)
  7. Network Externalities
    exist when the usefulness of a product increases with the number of consumers who use it.
  8. Behavioral Economics
    the study of situations in which people do not act economically rational. (ignore nonmonetary opportunity costs, fail to ignore sunk costs and are overly optimistic)
  9. Endowment Effect
    people tend to value something more if they own it, than if they do not own it.
  10. Sunk Cost
    A cost that has already been paid and cannot be recovered.
Card Set
Microeconomics Ch. 9
Definitions and Equations