Concise Summary of Elements of Economics

Nature of Economics

• Concerned with distribution of limited resources to satisfy unlimited wants.
• Divided into Microeconomics (individual behavior) and Macroeconomics (economic aggregates).

Economic Terminology:

• Induction: From specific facts to general theory.
• Deduction: From theory to facts.
• Positive Economics: Objective analysis (WHAT IS).
• Normative Economics: Subjective analysis with value judgments (WHAT OUGHT TO BE).

Economic Problem:

• Unlimited wants vs. limited resources (scarcity).
• Scarce Resources: Natural, human, and manufactured resources.
• Types:
• Property resources: land, raw materials, capital.
• Human resources: labor, entrepreneurial ability.

Opportunity Cost:

• Value of the next best alternative foregone.

Resource Allocation Decisions:

• What to produce, how to produce, distribution of output, adaptability to change.

Consumer Goods vs. Capital Goods:

• Consumer goods satisfy wants directly, capital goods do so indirectly.

Division of Labour:

• Specialization increases efficiency but may lead to worker alienation.

Marginal Analysis:

• Marginal Benefit: Additional benefit from one more unit of activity.
• Marginal Cost: Additional cost from one more unit of activity.

Production Possibility Curve (PPC):

• Represents trade-offs due to scarcity.
• Shows maximum possible outputs.

Law of Diminishing Returns:

• Additional inputs yield progressively smaller increases in output.

Specialization and Trade:

• Adam Smith’s theory: Specialization increases total output.
• Absolute Advantage: Producing more than others.
• Comparative Advantage: Lower opportunity cost in production.
• Example: Trinidad vs. Jamaica in bauxite and oil production.
• Benefits from trade when specializing in comparative advantage.

Opportunity Costs of Production:

• Calculating costs for specialization decisions leads to mutual benefits from trade.