Chapter 4 Notes
4.1 Key Macroeconomic Variables
National Product and National Income
Production generates income; this fundamental relationship underpins all macroeconomic activity.
Aggregation leads to nominal national income, measured in current dollars, reflecting the total value of production at prevailing prices.
Real national income is measured in constant dollars, changing only with quantity changes, providing a measure of economic output adjusted for inflation.
Gross Domestic Product (GDP)
Commonly used measure of national income, in real or nominal terms, representing the total value of goods and services produced within a country's borders.
Real GDP shows a positive trend since 1975, indicating long-term economic growth, reflecting increasing productive capacity.
Short-term fluctuations occur around this trend, known as the business cycle, influencing employment and investment.
Figure 4-1: Demonstrates growth and fluctuations in Real GDP from 1975–2020.
Real GDP has risen steadily since 1975, showing long-term growth, indicative of economic development and increased living standards.
Short-term fluctuations are highlighted, with growth rate varying yearly, showing periods of recession and expansion.
The long-term upward trend reflects a positive average annual growth rate of 2.4 percent, showcasing sustained economic progress.
The Business Cycle
Consists of stages: trough, recession, recovery, and peak, representing the cyclical nature of economic activity.
Potential Output (Y $)
The output gap measures the difference between potential and actual output, providing insight into economic efficiency and resource utilization.
Output Gap = Y − YYYYY*YY*$$), suggesting possible inflationary pressures.
Figure 4-2: Illustrates Potential GDP and the Output Gap from 1985–2020.
Potential and actual GDP show an upward trend, reflecting overall economic expansion.
The output gap reflects fluctuations between potential and actual output, expressed as a percentage of potential output, indicating economic stability or instability.
Shaded areas indicate inflationary and recessionary gaps, providing a visual representation of economic imbalances.
Why National Income Matters
Important measure of economic performance, guiding policy decisions and investment strategies.
Recessions lead to unemployment and lost output, impacting individuals and the economy.
Booms can cause inflation, eroding purchasing power and economic stability.
Long-run trend in real per capita income is a determinant of the standard of living, reflecting the overall well-being of a country's population.
Economic growth doesn't guarantee universal benefit, highlighting the importance of equitable distribution.
Employment, Unemployment, and the Labour Force
Key terms:
Employment: Number of people currently employed in the economy, contributing to production and income.
Unemployment: Number of people who are actively looking for a job but aren't currently employed, representing untapped labor resources.
Labour force: Total number of employed and unemployed people, representing the total available workforce.
Unemployment rate: Percentage of the labor force that is unemployed, a key indicator of labor market health.
Potential GDP: Occurs at full employment, indicating optimal resource utilization.
Even at full employment, some unemployment exists due to:
Frictional unemployment: Natural turnover in the labor market, as people transition between jobs.
Structural unemployment: Mismatch between jobs and workers' skills or location, requiring retraining or relocation.
Cyclical unemployment: Occurs when real GDP is less than potential GDP, reflecting downturns in the business cycle.
Figure 4-3: Shows Labour Force, Employment, and Unemployment from 1976–2020.
Labor force and employment have grown since 1976, reflecting population growth and economic expansion.
The unemployment rate is cyclical, fluctuating with the business cycle.
Booms correlate with low unemployment, slumps with high unemployment, illustrating the sensitivity of the labor market to economic conditions.
Employment has grown in line with the labor force, indicating a balanced labor market.
Short-term fluctuations in unemployment rate are substantial, reflecting the dynamic nature of the economy.
Unemployment rate as low as 5.7 percent in 2019, indicating a strong economy.
High of 12 percent during the 1982 recession, reflecting severe economic downturn.
COVID-19 pandemic: Unemployment rate increased to 13.7 percent, then gradually decreased in 2020, illustrating the pandemic's impact and subsequent recovery.
Why Unemployment Matters
Significant social impact, affecting individuals, families, and communities.
Causes loss of income and output, reducing overall economic welfare.
Associated with crime, mental illness, and social unrest, especially long-term, indicating the broad societal costs of unemployment.
Productivity
Productivity measures output per unit of input, reflecting the efficiency of production.
Labour productivity: Real GDP divided by the level of employment (or total hours worked), indicating the output per worker.
Significant increase in labor productivity over the past half-century, driving economic growth and improved living standards.
Productivity growth drives rising living standards over long periods, improving overall societal well-being.
Figure 4-4: Displays Canadian Labour Productivity from 1976–2020.
Inflation and Price Level
Price level: Average level of all prices in the economy, expressed as an index number, indicating the general cost of goods and services.
Inflation: Rate at which the general level of prices for goods and services is rising, and subsequently, purchasing power is falling, eroding the real value of money.
Consumer Price Index (CPI): A measure that examines the weighted average of prices of a basket of consumer goods and services, such as transportation, food, and medical care, used to calculate inflation.
Rate of inflation calculated using CPI data, providing a key economic indicator.
Why Inflation Matters
Money is valued for its purchasing power, influencing economic transactions and investment decisions.
Purchasing power of money: Amount of goods and services that can be bought with a unit of money, affected by inflation.
Inflation reduces the purchasing power of money and the real value of sums fixed in nominal terms, impacting savings and investments.
If inflation is fully anticipated, adjustments can be made to maintain real values, mitigating its negative effects.
Unanticipated inflation leads to changes in the real value of prices and wages, creating economic uncertainty.
Inflation is rarely fully anticipated or fully unanticipated, leading to imperfect adjustments and economic distortions.
Adjustments in wages and prices are made but might not fully offset effects on resource allocation, influencing economic efficiency.
Figure 4-5: Shows the Price Level and the Inflation Rate from 1960–2020.
Price level has trended upward, reflecting long-term inflationary pressures.
Inflation rate has varied from almost 0 to over 12 percent since 1960, showcasing economic volatility.
Interest Rates
Interest rate: Price paid per dollar borrowed per period of time, expressed as a proportion or percentage, influencing borrowing and lending decisions.
Nominal vs. real interest rate, with the real interest rate adjusted for inflation.
Why do interest rates matter?
Impacts savers and borrowers, influencing saving and investment behavior.
Influences investment plans, affecting economic growth and development.
Affects credit flows, shaping the availability of funds for businesses and consumers.
Figure 4-6: Presents Real and Nominal Interest Rates from 1965–2020.
Exchange Rates and Trade Flows
Exchange rate: The price of one currency expressed in terms of another, influencing international trade and investment.
Foreign currency: Currency of another country, essential for international transactions.
Foreign-exchange market: Market in which currencies are traded, determining exchange rates.
Appreciation vs. depreciation: Currency becomes more valuable (appreciation) or less valuable (depreciation) relative to another currency, affecting trade competitiveness.
Figure 4-7: Displays the Canadian–U.S. Dollar Exchange Rate from 1975–2020.
The rate has been volatile, reflecting economic and political factors.
The long-term depreciation of the Canadian dollar (early 1970s to 2002), affecting import and export prices.
Appreciation of the Canadian dollar by 2012, improving purchasing power.
Depreciation between 2012 and 2020, influencing trade dynamics.
The trade-weighted exchange rate mirrors the Canadian–U.S. exchange rate due to the large proportion of Canadian trade with the United States.
CDN$ depreciation in the late 1990s, boosting exports.
CDN$ appreciation from 2002–2012, increasing import affordability.
Canada is a trading nation, relying on international trade for economic prosperity.
Net exports: Difference between exports and imports, also known as the trade balance, indicating a trade surplus or deficit.
Canadian exports and imports have increased in step over the past 40 years, reflecting globalization and economic integration.
The trade balance has remained relatively small as a proportion of total GDP, indicating trade stability.
Figure 4-8: Shows Canadian Imports, Exports, and Net Exports from 1980–2020.
4.2 Growth Versus Fluctuations
Long-Term Economic Growth
Rising total output and output per person lead to rising living standards, improving quality of life.
Long-term growth is crucial for societal living standards from generation to generation, ensuring sustainable progress.
Debate on government's ability to influence long-run growth, concerning optimal policy interventions.
Short-Term Fluctuations
Leads economists to study business cycles, understanding economic instability.
Debate on the effectiveness of monetary and fiscal policy in influencing fluctuations, regarding economic stabilization.
Some argue against frequent changes in spending and taxing to "fine-tune" the economy, questioning the efficacy of interventionist policies.