Chapter 8: Gross Domestic Product (GDP)

Definition and Measurement of GDP

Gross Domestic Product (GDP) is the market value of all final goods and services produced within a country in a given period of time. It is a key indicator of a nation's economic activity and health.

• Total Production = Total Income: In a closed economy, the value of total production equals the total income generated by that production.

• GDP measures: The value of output produced domestically, regardless of the nationality of the producer.

Components of GDP

• Consumption (C): Spending by households on goods and services.

• Investment (I): Spending on capital equipment, inventories, and structures, including new housing.

• Government Purchases (G): Spending on goods and services by local, state, and federal governments.

• Net Exports (NX): Exports minus imports.

GDP Equation:

Shortcomings of GDP

• Does not account for non-market transactions (e.g., household production, black market).

• Does not measure the distribution of income.

• Ignores environmental degradation and leisure time.

• Does not capture quality improvements or well-being.

Calculating Nominal GDP, Real GDP, and the GDP Deflator

• Nominal GDP: Value of goods and services at current prices.

• Real GDP: Value of goods and services at constant base-year prices.

• GDP Deflator: Measures the price level of all new, domestically produced, final goods and services in an economy.

Formulas:

• Nominal GDP:

• Real GDP:

• GDP Deflator:

Calculating Inflation

• Inflation Rate:

Other Measures of Total Production and Income

• Gross National Product (GNP): Measures the value of production by a country's citizens, regardless of location.

• Net National Product (NNP): GNP minus depreciation.

• National Income: Total income earned by a nation's residents both domestically and abroad.

Key Definitions

• Final Goods: Goods purchased by the final user.

• Intermediate Goods: Goods used as inputs in the production of other goods.

• Value Added: The market value a firm adds to a product.

Chapter 9: Unemployment and Inflation

Population Segmentation and Labor Market Surveys

The population is segmented to measure labor market activity:

• Employed: People currently working for pay.

• Unemployed: People not working but actively seeking work.

• Not in Labor Force: People not working and not seeking work (e.g., students, retirees).

Two main surveys:

• Household Survey (Current Population Survey): Surveys households to determine labor force status.

• Establishment Survey (Payroll Survey): Surveys businesses to measure employment, hours, and earnings.

Calculating Labor Market Indicators

• Unemployment Rate:

• Labor Force Participation Rate:

• Employment-Population Ratio:

Discouraged Workers

• Individuals who have stopped looking for work because they believe no jobs are available for them.

• Not counted as unemployed, but as "not in the labor force."

Types of Unemployment

• Frictional Unemployment: Short-term unemployment from the process of matching workers with jobs.

• Structural Unemployment: Unemployment from a mismatch between workers' skills and job requirements.

• Cyclical Unemployment: Unemployment caused by economic downturns.

Full Employment and the Natural Rate of Unemployment

• Full Employment: When all unemployment is frictional or structural; cyclical unemployment is zero.

• Natural Rate of Unemployment: The normal rate of unemployment, consisting of frictional and structural unemployment.

Consumer Price Index (CPI) and Inflation

• CPI: Measures the average change over time in the prices paid by urban consumers for a market basket of goods and services.

• Calculating CPI:

• Calculating Inflation (using CPI):

Indexation

• Adjusting payments (such as wages or pensions) automatically for inflation using a price index.

Shortcomings of CPI

• Substitution bias

• Introduction of new goods

• Quality change bias

• Outlet bias

Nominal vs. Real Interest Rates

• Nominal Interest Rate: The stated interest rate on a loan.

• Real Interest Rate: The nominal rate adjusted for inflation.

Formula:

Key Definitions

• Labor Force: The sum of employed and unemployed workers.

• Discouraged Worker: A person who is available for work but has not looked for a job during the previous four weeks because they believe no jobs are available.

Chapter 10: Economic Growth and the Financial System

Long-Run Economic Growth

Long-run economic growth refers to the sustained upward trend in the economy's output over time, typically measured by increases in real GDP per capita.

Calculating Growth Rates

• Growth from One Year to the Next:

• Constant Growth Rule: If a variable grows at a constant rate g per year, after t years:

• Rule of 70: The number of years it takes for a variable to double is approximately (where the growth rate is expressed as a percentage).

• Average Growth Rate:

Determinants of Long-Run Economic Growth

• Increases in labor productivity (output per worker)

• Capital accumulation (physical and human capital)

• Technological change

• Institutions and policies that support innovation and investment

Actual vs. Potential GDP

• Actual GDP: The economy's current level of output.

• Potential GDP: The level of output when all resources are fully employed (at the natural rate of unemployment).

The Financial System

• Financial Markets: Where savers provide funds directly to borrowers (e.g., stock and bond markets).

• Financial Intermediaries: Institutions that channel funds from savers to borrowers indirectly (e.g., banks, mutual funds).

• Direct Finance: Borrowers obtain funds directly from lenders by selling securities.

• Indirect Finance: Funds flow from savers to borrowers through financial intermediaries.

Savings and Investment Identity

• In a closed economy:

• Rearranged:

• National saving equals investment:

The Market for Loanable Funds

The market for loanable funds is where savers supply funds for loans to borrowers. The interest rate is determined by the supply and demand for loanable funds.

• Shifts in Supply: Changes in saving behavior, government policies, etc.

• Shifts in Demand: Changes in investment opportunities, business expectations, etc.

• Movements Along the Curve: Caused by changes in the interest rate.

Crowding Out

• Occurs when increased government borrowing raises interest rates and reduces private investment.

Key Definitions

• Loanable Funds: Funds available for borrowing and lending.

• Crowding Out: The reduction in private investment due to increased government borrowing.