经济学原理-Chap02曼昆.ppt

Thinking Like an Economist
Chapter 2
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Every field of study has its own terminology
Mathematics
axioms
integrals
vector spaces
Psychology
ego
id
cognitive dissonance
Law
torts
venues
Promissory estoppel
停归障哥营灾固傈牌梢讼怪腕臆棵齿遇未毕舷馁绵辅睹径锚兄刀线抱勺狙经济学原理-Chap02曼昆Five Debates Over Macroeconomic Policies
Every field of study has its own terminology
Economics
Supply
Demand
Elasticity
Consumer Surplus
Comparative advantage
Opportunity cost
Deadweight loss
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Economics trains you to. . . .
Think in terms of alternatives.
Evaluate the cost of individual and social choices.
Examine and understand how certain events and issues are related.
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The Economist as a Scientist
The economic way of thinking . . .
Involves thinking analytically and objectively.
Makes use of the scientific method.
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The Scientific Method
Uses abstract models to help explain how plex, real world operates.
Develops theories, collects, and analyzes data to prove the theories.
Observation, Theory and More Observation!
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The Role of Assumptions
Economists make assumptions in order to make the world easier to understand.
The art in scientific thinking is deciding which assumptions to make.
Economists use different assumptions to answer different questions.
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