The Short Run

From the study guide

Course Outline

  1. GDP Components and Circular Flow
  2. Goods Demand and Consumption
  3. Equilibrium Output and Multiplier
  4. Investment and Saving Equilibrium
  5. Thrift and Strategic Dilemmas
  6. Limits of Fiscal Policy

1. GDP Components and Circular Flow

Key Concepts & Definitions

  • Net exports: Also called the trade balance, exports minus imports.
  • Fixed investment: The sum of non-residential investment and residential investment.
  • Inventory investment: The difference between goods produced and goods sold in a given year.
  • Government spending: Purchases of goods and services by federal, state, and local governments, excluding government transfers.

Essential Points

  • With fixed prices and wages, changes in demand change production, changes in production change income, and changes in income change demand.

📌 Economic investment adds to global potential output, whereas financial investment refers to investment from a financial perspective and is not included in the economic definition.

📌 A trade surplus occurs when exports exceed imports, whereas a trade deficit occurs when imports exceed exports.

2. Goods Demand and Consumption

Key Concepts & Definitions

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Practice quiz preview

1. In a closed economy with linear consumption, which formula gives equilibrium output?

2. A household has disposable income of YDY_D and consumes CC. How is its private saving defined?

3. Why can a collective effort to save more lower total saving in the paradox of thrift?

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Flashcard preview

With fixed prices and wages, what happens to production when demand changes?

Production changes.

With fixed prices and wages, what changes when production changes?

Income changes.

What does economic investment add to?

Global potential output.

How are net exports, or the trade balance, calculated?

Exports minus imports.

When does a trade surplus occur?

When exports exceed imports.

What identity defines total goods demand in an open economy?

Z≡C+I+G+X−IMZ \equiv C + I + G + X - IM

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Frequently asked questions

What does the The Short Run study guide cover?

It covers the core concepts of The Short Run, organized by topic with the key definitions, explanations and takeaways, so it's easier to learn and remember.

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How many questions are in the The Short Run quiz?

The practice quiz has 20 multiple-choice questions, each with an explanation. Use it to check what you know and find your gaps.

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How do I study The Short Run with flashcards?

There are 45 flashcards on The Short Run, with a question on the front and the answer on the back. Try to recall each answer before you flip, and let spaced repetition bring back the ones you miss.

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