Chapter 1: Principles of Macroeconomics Flashcards
How Individuals make choices
Scarcity
opportunity cost
marginal analysis
incentives
Resource
anything that can be used to produce something else (scarce: not enough of a resource to satisfy all ways a society can use it)
Economics
the study of how individuals or societies choose to use the limited (scarce) resources to try to satisfy their unlimited wants
Economy’s resources
Land, labor, capital (machines) and human capital (education and skill of labor force)
Examples of scarce resources
Natural: minerals, lumber, petrol
Human: labor, skill and intelligence
Clean air and water
Principle #1:
Choices are necesary because resources are scarce
Principle #2:
The “opportunity cost” (what you must give up to get it) of an item is it’s true cost
trade-off
a comparison of costs and benefits
marginal decisions
whether to do a bit more or less of an activity
Principle #3:
“How much” decisions require making trade-offs at the margin: comparing the costs and benefits of doing a little bit more of an activity versus a little bit less
Marginal analysis
study of “how much” decisions
Principle #4:
People usually respond to incentives exploiting opportunities to make themselves better off.
How individual choices interact:
Trade Gains from trade Specialization Equilibrium Efficiency and equity
Principle #5:
There are gains from trade
Gains from trade
People get more of what they want than they could get by being self sufficient
specialization
the situation in which each person specializes in the task that he or she is good at performing
Principle #6:
markets move toward equilibrium
Equilibrium
an economic situation in which no individual would be better off doing something different
Principle #7:
resources should be used efficiently to achieve society’s goals
Efficiency
taking all opportunities to make some people better off without making others worse off
Equity
everyone gets his or her fair share; there is typically a trade-off; Equity and efficiency are often at odds.
Principle #8:
Markets usually lead to efficiency: people normally take opportunities for mutual gain.
Principle #9:
When markets don’t achieve efficiency, government intervention can improve society’s welfare
1 Way Markets Fail
Individual actions have side effects that are not properly taken account by the market (causing pollution)