1. The Close-Up View: What is Microeconomics?

Microeconomics is “the branch of economics that examines the choices and interactions of individuals producing and consuming one product, in one firm or industry.” It zooms in on the specific components of the economy to understand how they operate.

The primary focus of microeconomics is on the behavior and decisions of small-scale economic actors, such as:

• Individuals and Households: How they choose to spend their money and what products they decide to buy.
• Firms and Businesses: How a single company decides what to produce, how much to charge, and how many people to hire.
• Specific Markets: The forces of supply and demand for a single good, like gasoline, pizza, or baseballs.

Microeconomics answers questions about the specific choices people make and how markets function. The key topics it studies include:

• Individual Consumer Choices: This area explores how a single consumer with a limited budget makes decisions.
  • Example: Imagine you have $500. You see a stereo, a jacket, and a TV that all cost $500. Microeconomics analyzes the factors that go into your choice. This trade-off is known as the opportunity cost, which is the value of the next best alternative you gave up. If the jacket was your second choice, it represents the opportunity cost of buying the stereo.
• Supply and Demand for a Single Product: This is a core concept in microeconomics that looks at the relationship between the price of a specific good and how much of it is produced and consumed.
  • Example: A firm must decide how many baseballs it is willing to supply at various prices. At the same time, consumers decide how many baseballs they are willing to buy at those same prices.
• Firm Behavior: Microeconomics examines how businesses make decisions to maximize their success.
  • Example: A firm aims to maximize its profit by producing up to the point where the additional revenue from selling one more unit (marginal revenue) is equal to the additional cost of producing that unit (marginal cost).

Now that we’ve seen how microeconomics zooms in on individual choices, let’s zoom out to see the big picture with macroeconomics.

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