Tutorial Categories
Macro Economy Tutorials - Page 2
Understand how economies grow, slow down, and recover through inflation, interest rates, policy decisions, and economic cycles.
Showing 11 to 20 of 50 tutorials (Page 2 of 5)
GDP Deflator vs CPI vs PCE: Understanding the Three Measures of Inflation and Why They Sometimes Tell Different Stories
This tutorial explores the three most important measures of inflation: the Consumer Price Index (CPI), the GDP deflator, and the Personal Consumption Expenditures (PCE) price index. You will learn how the CPI measures price changes from the perspective of households using a fixed basket of goods; how the GDP deflator measures price changes across all domestically produced goods and services; and why the Federal Reserve and other central banks prefer the PCE index for setting monetary policy. Using a simple numerical example of apples and laptops, we will walk through the key differences between these measures—including scope, weighting, substitution bias, and treatment of imports—and explore what their divergences reveal about the economy. With real-world examples from the 1970s oil shocks, the 1990s technology boom, and the 2021–2023 inflation surge, and with practical guidance on where to find the data, this tutorial shows how understanding these differences is essential for interpreting economic news and understanding the policy decisions that affect your life.
Limitations of GDP & Beyond GDP: Understanding What the Most Famous Economic Indicator Leaves Out
This tutorial explores the critical limitations of Gross Domestic Product (GDP) as a measure of societal well-being and the efforts to develop alternative indicators that capture what GDP leaves out. You will learn why GDP does not account for non-market activities like household work, the underground economy, environmental degradation, the distribution of income, or the value of free digital services—and why these omissions matter for understanding whether a country is truly progressing. We will walk through the concept of the informal economy in both advanced and developing nations, examine the environmental costs of growth and the debate between weak and strong sustainability, confront the reality of inequality and the Easterlin Paradox on happiness, and explore the modern challenge of measuring the value of free digital goods. Finally, we will survey alternative measures—from the Genuine Progress Indicator (GPI) to the Human Development Index (HDI) to the Inclusive Wealth Index—and consider how policymakers in New Zealand, the OECD, and the European Union are moving toward dashboard approaches that capture multiple dimensions of progress. Using real-world examples from the 2008 financial crisis, the COVID-19 pandemic, and long-term trends in inequality and environmental degradation, this tutorial shows why we need to look beyond GDP to understand true progress—and why GDP remains a vital tool when used alongside other measures.
Welfare Economics & Policy Evaluation: Understanding How Economists Judge What Makes Society Better Off
This tutorial introduces welfare economics—the branch of economics that asks how we can judge whether one economic outcome is better than another. You will learn the foundational distinction between positive economics (describing what is) and normative economics (prescribing what should be). We will explore Pareto efficiency, the Fundamental Theorems of Welfare Economics, and why markets sometimes fail—due to externalities, public goods, information problems, or market power. We will examine social welfare functions, the tools economists use to weigh the well-being of different individuals, and the central tension between equity and efficiency. Finally, we will walk through cost-benefit analysis—including concepts like the value of a statistical life, compensating variation, and the social discount rate—and introduce Kaldor–Hicks efficiency, the standard used in real-world policy evaluation. Using a running example of a carbon tax and real-world debates over the social cost of carbon, this tutorial shows how economists think about the ethical and practical questions at the heart of economic policy.
Income & Wealth Inequality: Understanding the Gap Between the Rich and Everyone Else
This tutorial explores one of the most pressing issues in modern economics: the growing gap between the rich and everyone else. You will learn how economists measure inequality using tools like the Gini coefficient and top income shares, and why it is crucial to distinguish between income (the flow of earnings) and wealth (the stock of assets). We will examine the forces driving inequality—from technological change and globalization to shifts in labor market institutions, the rise of superstar firms, the role of housing, and the distributional effects of monetary policy—and consider the macroeconomic consequences, including slower growth, financial instability, and the erosion of social trust. Using real-world examples from the United States, where inequality has risen dramatically since the 1980s, and from countries like Sweden and Brazil, which have taken different paths, this tutorial shows how inequality intersects with race, gender, and geography, and how policy choices shape the trajectory of inequality.
Aggregate Demand: Understanding the Total Spending That Drives the Economy
This tutorial introduces aggregate demand (AD)—the total spending on goods and services in an economy at a given price level. You will learn the four components of AD—consumption, investment, government spending, and net exports—and how they add up to the total demand for everything an economy produces. We will explore why the aggregate demand curve slopes downward, examining the wealth effect, the interest rate effect (with the role of the money market), and the exchange rate effect (with capital flows and exchange rate regimes). We will also examine the factors that cause the entire AD curve to shift—changes in expectations, fiscal policy, monetary policy, and global economic conditions—using real-world examples from the 2008 financial crisis, the COVID-19 pandemic, and the 2021–2023 inflation surge. By understanding aggregate demand, you will gain a foundation for understanding why economies experience booms and recessions, and how policymakers respond to economic fluctuations.
Aggregate Supply: Understanding the Economy's Capacity to Produce
Aggregate supply (AS) is the total quantity of goods and services that firms in an economy are willing and able to produce at different price levels. This tutorial explains the crucial distinction between short-run aggregate supply (SRAS), where wages and prices are sticky and output can deviate from potential, and long-run aggregate supply (LRAS), where all prices have adjusted and the economy operates at its full capacity. You will learn why the SRAS curve slopes upward (due to sticky wages, sticky prices, and misperceptions), why the LRAS curve is vertical (the long-run neutrality of money), and what factors cause these curves to shift – including input prices, expectations, labor, capital, technology, and institutions. Using real-world examples from the 1970s oil shocks, the 2008 financial crisis, the COVID-19 pandemic, and the 2021–2023 supply chain disruptions, you will see how aggregate supply shapes the economy's response to shocks and why demand-side policies have different effects in the short run versus the long run.
AD-AS Equilibrium: How Economies Determine Output, Prices, and Respond to Shocks
The AD-AS model is the workhorse framework of macroeconomics, bringing together aggregate demand (total spending) and aggregate supply (total production) to explain how an economy's output and price level are determined. This tutorial walks you through the concept of short-run equilibrium, where the economy can produce above or below its potential, and long-run equilibrium, where output returns to its full capacity and prices have fully adjusted. You will learn what happens when the economy is hit by different types of shocks – demand shocks like the dot-com bust of 2001 or the early 1990s recession, and supply shocks like the 1970s oil embargoes – and how the economy's self-correcting mechanism, guided by inflation expectations, gradually brings it back to potential output over time. Using real-world examples and acknowledging the practical challenges of time lags and uncertainty, you will see how the AD-AS model helps policymakers diagnose economic problems and why the appropriate policy response depends critically on whether a shock originates on the demand side or the supply side.
Business Cycles & Economic Fluctuations: Understanding the Rhythm of Booms and Busts
This tutorial explores the business cycle—the recurring pattern of expansion and contraction that characterizes every market economy. You will learn the four phases of the cycle: expansion, when the economy grows and jobs are plentiful; peak, the turning point when growth maxes out; recession, when output falls and unemployment rises; and trough, the bottom from which recovery begins. We will examine the forces that drive these fluctuations, from shifts in aggregate demand and supply to the role of financial markets, credit cycles, and animal spirits, and see how these forces often combine to amplify the cycle. Using real-world examples from the Great Depression and the 1970s oil shocks, this tutorial shows how business cycles are not random events but the result of identifiable forces—and why understanding them is essential for navigating the economy.
Recessionary Gaps & Inflationary Gaps: Understanding When the Economy Falls Short or Overshoots
This tutorial explores one of the most important concepts in macroeconomics: the output gap—the difference between what an economy actually produces and what it could produce at full capacity. You will learn about recessionary gaps, when the economy operates below its potential, leaving workers unemployed and factories idle; and inflationary gaps, when the economy operates above its potential, straining resources and pushing prices upward. Using real-world examples from Japan's Lost Decade, the European debt crisis, the dot-com boom, and the Volcker disinflation of the early 1980s, this tutorial shows how understanding output gaps is essential for diagnosing economic problems and designing effective policy responses.
What Is Money? Understanding the Essential Tool That Makes Modern Economies Possible
This tutorial explores one of the most fundamental concepts in economics: money. You will learn what qualifies as money—anything that is generally accepted as a medium of exchange—and why money is distinct from wealth, income, and liquidity. We will examine the four essential functions of money: as a medium of exchange that overcomes the inefficiencies of barter, as a unit of account that measures value, as a store of value that preserves purchasing power over time, and as a standard of deferred payment that enables credit and debt. Using real-world examples from hyperinflation in Zimbabwe and Weimar Germany to illustrate the fragility of money as a store of value, and from the transition from the gold standard to modern fiat money to show the evolution of trust, this tutorial explains why modern money works despite having no intrinsic value—and why trust, backed by government, central bank credibility, and network effects, is the foundation of any monetary system.