The Great Depression is Over!

Throughout the 20th century, the Great Depression dominated macroeconomic discourse, engaging prominent economists such as Keynes, Hayek, Friedman, Lucas, and Prescott. Most principles of macroeconomics textbooks spend considerable time analyzing the Great Depression as it was this event which galvanized thinking about aggregate demand, bank runs, fiscal policy and money policy. However, the Great Depression occurred nearly a century ago and in a vastly different world, rendering its analysis more relevant to economic history than contemporary macroeconomics.  We think it’s time to revise.

In the forthcoming edition of Modern Principles we excise the Great Depression and focus instead on the Great Financial Crisis and the Pandemic Recession as exemplifying the core of macroeconomics and policy. These events showcase a demand-driven recession followed by a supply-driven one, well illustrated by our dynamic AD-AS model. Focusing on these recessions also moves the lessons beyond the shifting of curves and towards important discussions of shadow banking, securitization, the microeconomics of externalities, and how monetary and fiscal policy must change when the goal – as during a pandemic — is not to get people back to work!

The lessons drawn from these significant and more recent recessions will inform policymakers as they deal with future recessions and will be the subject of analysis by economists for generations to come. A textbook for the 21st century must analyze the macroeconomics of the 21st century.