Circular Flow: Leakages, Injections, Economic Activity

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Questions and Answers

Why is it necessary to measure output in terms of value rather than just quantities in macroeconomics?

  • Value automatically accounts for inflation.
  • Quantities do not reflect consumer preferences.
  • It allows for the aggregation of diverse goods and services. (correct)
  • Quantities are too difficult to track accurately.

In the circular flow of income model, if injections (investment, government spending, and exports) exceed leakages (saving, taxes, and imports), what is the likely impact on the income flow?

  • The income flow will remain constant.
  • The income flow will decrease.
  • The income flow will fluctuate unpredictably.
  • The income flow will increase. (correct)

Which of the following best describes the relationship between national income and aggregate output?

  • Aggregate output is a broader measure that includes national income.
  • National income and aggregate output can be used interchangeably. (correct)
  • National income is a component of aggregate output.
  • National income and aggregate output represent different concepts with no direct relation.

Which activity is directly part of measuring economic activity?

<p>Measuring a nation's income (C)</p> Signup and view all the answers

What is the primary reason why understanding national income and aggregate output is useful for an economy?

<p>It allows for assessing performance over time and comparisons with other economies. (B)</p> Signup and view all the answers

When calculating the 'value' of a good or service to determine aggregate output, what elements are considered?

<p>The quantity of the item, multiplied by its price. (D)</p> Signup and view all the answers

Which of the following situations indicates an increasing income and output for an economy?

<p>National income and aggregate output increasing over time. (D)</p> Signup and view all the answers

Why do economists measure national income?

<p>To assess an economy's performance. (A)</p> Signup and view all the answers

What are the major injections into of the circular flow of income?

<p>Investment, government spending and exports (D)</p> Signup and view all the answers

What are the major leakages from the circular flow of income?

<p>Saving, taxes and imports (C)</p> Signup and view all the answers

Flashcards

National Income Accounting

Measurement of an economy's national income or the value of output.

National Output

The total output of an economy.

Aggregate Output

The total output of an economy, also called national output.

Leakages (circular flow)

Leakages are savings, taxes and imports.

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Injections (circular flow)

Injections are investment, government spending, and exports.

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Gross Domestic Product (GDP)

The total value of all goods and services produced within a country’s borders during a specific time period.

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Gross National Income (GNI)

The total income earned by a country's residents, regardless of where it was earned.

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Real GDP and Real GNI

GDP and GNI adjusted for inflation, reflecting the real value of output and income.

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Real GDP/GNI per capita

Real GDP and Real GNI divided by the population, indicating average income or output per person.

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GDP/GNI per capita (PPP)

GDP/GNI per person adjusted for the relative purchasing power of different currencies. It accounts for the fact that goods are cheaper in some countries

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Study Notes

  • Leakages (saving, taxes, imports) and injections (investment, government spending, exports) in the circular flow of income do not have to be equal.
  • If injections are smaller than leakages, the income flow decreases; if injections exceed leakages, the income flow increases

Measures of Economic Activity

  • Measurement of economic activity involves measuring a nation's national income or the value of its output, it is referred to as national income accounting

  • National output is also known as aggregate output, representing total output

  • Knowing national income and aggregate output is useful for:

  • Assessing an economy's performance over time (whether income and output are increasing or decreasing)

  • Making comparisons of income and output with other economies

  • Establishing a basis for policies to meet economic objectives

  • Macroeconomics measures output in terms of 'value' rather than quantities

  • The value of a good is its quantity multiplied by its price

  • Measuring output in money terms overcomes the difficulty of adding up various goods and services

  • Macroeconomics output is always expressed in value terms

How Economic Activity is Measured

  • In the circular flow of income model, the value of aggregate output equals the total income generated, which equals expenditures made to purchase that output.
  • National income and the value of aggregate output are used interchangeably
  • The principle of equivalency will be used to see how national income or the value of aggregate output is measured

Learning Objectives

After reviewing this, you should be able to:

  • Define all the bold terms
  • Explain the expenditure, income, and output approaches to measure GDP in national income accounting and demonstrate their equivalence using the circular flow of income model
  • Explain nominal Gross Domestic Product (GDP)
  • Explain nominal Gross National Income (GNI)
  • Elucidate real GDP and real GNI
  • Know real GDP and real GNI per person (per capita)
  • Identify real GDP and real GNI per person (per capita) at purchasing power parity (PPP)

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