Chapter 8: Measuring Total Production and Income (GDP)

Gross Domestic Product (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 the primary measure of a nation's total economic activity.

• GDP measures: Both total production and total income in the economy.

• Equality: Total Production = Total Income (every dollar spent on a good or service becomes income for someone else).

Components of GDP

• Consumption (C): Spending by households on goods and services, excluding new housing.

• 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 include household production or the underground economy.

• Does not account for the value of leisure, environmental quality, or income distribution.

Calculating Nominal GDP, Real GDP, and the GDP Deflator

• Nominal GDP: Values output using current prices.

• Real GDP: Values output using the prices of a base year.

• GDP Deflator: Measures the price level relative to the base year.

Formulas:

• Nominal GDP:

• Real GDP:

• GDP Deflator:

Calculating Inflation

• Inflation Rate (using GDP Deflator):

Other Measures of Total Production and Income

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

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

• National Income: Total income earned by a nation's residents.

• Personal Income: Income received by households.

• Disposable Personal Income: Personal income minus taxes.

Key Definitions

• Final Good: A good sold to the end user.

• Intermediate Good: A good used to produce another good.

Chapter 9: Unemployment and Inflation

Segmenting the Population for Unemployment

The population is divided into three groups:

• Employed: People with jobs.

• Unemployed: People without jobs who are actively seeking work.

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

Household Survey and Establishment Survey

• 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 only frictional and structural unemployment exist (cyclical unemployment is zero).

• Natural Rate of Unemployment: The normal rate of unemployment (frictional + structural).

Calculating the Consumer Price Index (CPI)

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

CPI Formula:

Calculating Inflation (using CPI)

Indexation

• Adjusting payments or values for inflation (e.g., COLA in wages, Social Security).

Shortcomings of CPI

• Substitution bias, introduction of new goods, quality changes, outlet bias.

• May overstate the true cost of living increases.

Nominal vs. Real Interest Rates

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

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

Key Definitions

• Inflation: A general increase in prices.

• Deflation: A general decrease in prices.

Chapter 10: Economic Growth, Financial System, and Business Cycles

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: Estimates the number of years to double a variable.

• Average Growth Rate: The mean annual growth rate over a period.

Determinants of Long-Run Economic Growth

• Increases in labor productivity (output per worker).

• Technological change.

• Increases in capital per hour worked.

• Institutions and policies that encourage investment and innovation.

Actual vs. Potential GDP

• Actual GDP: The economy's current output.

• Potential GDP: The level of output when all resources are fully employed.

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 (e.g., banks, mutual funds).

• Direct Finance: Borrowers obtain funds directly from lenders.

• Indirect Finance: Borrowers obtain funds through financial intermediaries.

Savings and Investment Identity

In a closed economy:

So,

National saving equals investment:

The Market for Loanable Funds

• Shows the interaction of borrowers and lenders determining the market interest rate and the quantity of funds exchanged.

• Shifts: Changes in government policy, expectations, or economic conditions can shift supply or demand.

• Movements along: Changes in the interest rate cause movement along the supply or demand curve.

Crowding Out

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

Key Definitions

• Business Cycle: Fluctuations in economic activity over time.

• Recession: A period of declining real GDP.

• Expansion: A period of rising real GDP.