Week 3 – Chapter 8: Measuring the Economy

Business Cycles

The business cycle refers to the fluctuations in economic activity that an economy experiences over time, typically measured by changes in real GDP.

• Contraction/Expansion: Periods of declining (contraction) or increasing (expansion) economic activity.

• Economic growth: Sustained increase in real GDP over time.

Components of GDP

Gross Domestic Product (GDP) is the total market value of all final goods and services produced within a country in a given period.

• Consumption: Spending by households on goods and services.

• Final goods vs. intermediate goods: Only final goods are counted in GDP to avoid double counting.

• Government purchases: Expenditures by government on goods and services.

• Investment: Spending on capital goods that will be used for future production.

• Net exports: Exports minus imports.

GDP Measurement and Related Concepts

• GDP deflator/price index: Measures the change in prices of all new, domestically produced, final goods and services in an economy.

• Nominal vs. real GDP: Nominal GDP is measured at current prices; real GDP is adjusted for inflation.

• Per capita GDP: GDP divided by the population, indicating average economic output per person.

• Price level: Average of current prices across the entire spectrum of goods and services produced in the economy.

• Receipts and services: Income received and services provided, often included in national accounts.

• Transfer payments: Payments made by the government to individuals, not in exchange for goods or services (e.g., social security).

Problem Solving: GDP Calculations

• Calculating nominal and real GDP and GDP deflator:

• Calculating growth rate:

Week 4 – Chapter 9: Unemployment and Inflation

Types of Unemployment

Unemployment measures the share of the labor force that is jobless and actively seeking work.

• Cyclical unemployment: Caused by economic downturns.

• Frictional unemployment: Short-term unemployment as people move between jobs.

• Structural unemployment: Mismatch between workers' skills and job requirements.

• Natural rate of unemployment: Sum of frictional and structural unemployment; the unemployment rate when the economy is at full employment.

• Full employment output: Level of output when the economy is at the natural rate of unemployment.

Labor Force and Measurement Issues

• Labor force participation rate: Percentage of working-age population in the labor force.

• Discouraged workers: Individuals not seeking work because they believe no jobs are available.

• Marginally attached workers: People not in the labor force but want and are available for work.

• Underemployment: Workers employed below their skill level or part-time when full-time is desired.

• Unemployment rate: Percentage of labor force that is unemployed.

• Efficiency wage: Above-market wage paid by employers to increase productivity.

• Problems with unemployment measure: Does not account for discouraged or underemployed workers.

Inflation Measurement

• CPI (Consumer Price Index): Measures changes in the price level of a market basket of consumer goods and services.

• Chained CPI: Adjusts for changes in consumer behavior and substitution between goods.

Problem Solving: Labor and Inflation Calculations

• Calculating labor force participation rate and unemployment rate:

• Calculating CPI:

• Real vs. nominal value: Real values are adjusted for inflation; nominal values are not.

• Calculating inflation rate:

Week 5 – Chapters 10 and 11: Economic Growth and Financial Markets

Economic Growth and Capital

Economic growth is driven by increases in capital, labor productivity, and technological progress.

• Human capital: Skills and knowledge of workers.

• Industrial revolution: Period of rapid industrialization and economic growth.

• Labor productivity: Output per worker.

• Economic growth model and policies: Theories and government actions to promote growth.

• Per worker production function: Relationship between output and input per worker.

Investment and Financial Markets

• Foreign direct investment: Investment by a firm in a foreign country.

• Foreign portfolio investment: Investment in foreign financial assets.

• Loanable funds market: Market where savers supply funds for borrowers.

• Consumer funds flow: Movement of funds from savers to borrowers.

• Expected return: Anticipated profit from an investment.

• Interest rate: Cost of borrowing money.

• Investor confidence: Trust in the stability and profitability of investments.

• Shifts in demand and supply of loanable funds: Changes in saving and investment behavior affect interest rates.

• Banks, financial intermediaries: Institutions that connect savers and borrowers.

• Bonds and stock markets: Venues for buying and selling debt and equity securities.

• Direct vs. indirect finance: Direct finance involves borrowers and lenders dealing directly; indirect finance uses intermediaries.

• Secondary markets: Markets for reselling financial assets.

• Securitization: Pooling financial assets to create new securities.

• Security: Financial instrument representing ownership or debt.

Problem Solving: Loanable Funds Market Analysis

• Analyzing supply and demand in loanable funds market: Understanding how changes in saving, investment, and government policy affect interest rates and economic growth.

Summary Table: Types of Unemployment

Summary Table: GDP Measurement Approaches

Additional info: Some definitions and formulas have been expanded for clarity and completeness. The notes are organized by week and chapter, following the structure of a typical college-level Macroeconomics course.