Chapter 1: Foundations of Economics – Key Concepts and Applications

What is Economics?

Definition and Scope of Economics

Economics is the social science that studies the choices individuals, businesses, governments, and societies make as they cope wlith scarcity and the incentives that influence and reconcile those choices. Scarcity arises because human wants exceed the resources available, necessitating choices and tradeoffs. Economics is divided into two main branches:

• Microeconomics: Focuses on the choices of individuals and businesses, market interactions, and government influence.

• Macroeconomics: Examines the performance of national and global economies, including issues like unemployment and inflation.

Example: A microeconomic question might be "Why are people buying more e-books and fewer hard copy books?" while a macroeconomic question could be "Why does the unemployment rate in Canada fluctuate?"

Two Big Economic Questions

What, How, and For Whom?

Economics seeks to answer two fundamental questions:

• What, how, and for whom are goods and services produced?

• When do choices made in self-interest also promote the social interest?

Goods and services are produced using factors of production:

• Land: Natural resources

• Labour: Human effort, influenced by human capital (education, skills)

• Capital: Tools, machines, buildings

• Entrepreneurship: Organization and innovation

Distribution of goods and services depends on income earned from these factors:

• Land earns rent

• Labour earns wages

• Capital earns interest

• Entrepreneurship earns profit

Example: The composition of production varies by country. In Canada, services dominate production, while agriculture is more significant in Ethiopia.

Growth of Human Capital

Human capital, measured by educational attainment, has grown significantly in Canada over the past century. This trend influences the quality of labour and overall economic productivity.

Self-Interest vs. Social Interest

Choices made in self-interest may or may not align with the social interest. Social interest is defined by two dimensions:

• Efficiency: Resource use is efficient if it is impossible to make someone better off without making someone else worse off.

• Equity: Fairness in the distribution of resources and outcomes.

Major topics illustrating the tension between self-interest and social interest include globalization, information-age monopolies, climate change, and economic instability.

The Economic Way of Thinking

Six Key Ideas

Economists use a structured approach to analyze choices:

1. A choice is a tradeoff: Scarcity forces individuals to give up one thing to obtain another.

2. Rational choices: People compare benefits and costs to maximize their net gain.

3. Benefit: The gain or pleasure derived from an action, determined by preferences.

4. Cost: The opportunity cost, or the highest-valued alternative forgone.

5. Marginal analysis: Most choices are "how-much" decisions made at the margin, weighing marginal benefit against marginal cost.

6. Incentives: Rewards or penalties that influence choices.

Example: Deciding how much time to allocate between studying and leisure involves comparing the marginal benefit of extra study time to its marginal cost.

Formula: Opportunity cost can be expressed as:

$\text{Opportunity Cost} = \text{Value of Best Alternative Forgone}$

Economics as a Social Science and Policy Tool

Positive vs. Normative Statements

Economists distinguish between:

• Positive statements: Descriptions of what is, testable by facts.

• Normative statements: Opinions about what ought to be, not testable.

Economic models are simplified representations of reality, used to predict and analyze outcomes. Models are tested using natural experiments, statistical investigations, and economic experiments.

Policy Advice

Economics provides tools for evaluating policy alternatives by comparing marginal benefits and costs, though it cannot determine normative goals.

Economists in the Economy

Career Opportunities and Skills

Economics majors pursue careers as economists, market research analysts, financial analysts, and budget analysts in private firms, government, and international organizations. The field offers competitive salaries and growth prospects.

Key skills sought by employers include:

• Critical-thinking skills: Problem-solving using logic

• Analytical skills: Using economic tools to analyze data

• Math skills: Applying mathematics and statistics

• Writing skills: Communicating ideas in written reports

• Oral communication skills: Explaining concepts to non-economists

Diversity, Equity, and Inclusion in Economics

There is underrepresentation of women and minorities in economics compared to their share in the population. Efforts to improve diversity are ongoing, as a more inclusive profession is seen as both fairer and more efficient, enhancing research quality and economic policy.

Degree	Women (% of economics students)
Undergrads	~42%
Current MAs	Similar to undergrads
Graduated MAs	Similar to undergrads
First-year Ph.D.s	Similar to undergrads
Ph.D. thesis writers	Similar to undergrads
Graduated Ph.D.s	Similar to undergrads

Additional info: Diversity and inclusion are essential for attracting the best talent and making the economics profession—and the economy—more prosperous.