Money & Finance › Economics & schools of thought
Schools of economic thought
· Theory or school
Experts disagreeEconomists or investors genuinely disagree.
Rival frameworks for how economies work, differing mainly on whether markets self-correct and how much government should act.
See it on the Money & Finance map →How it works
Classical economists (Adam Smith, David Ricardo) saw markets as largely self-correcting. Marx argued capitalism exploits labor and breeds crises. Keynes (1936) said demand shortfalls can cause lasting unemployment, so governments should spend. Friedman's monetarists stressed steady money growth; the Austrian school (Mises, Hayek) blames cheap credit for booms and busts; supply-siders focus on taxes; Modern Monetary Theory says a currency issuer's real limit is inflation. Today's mainstream blends several into 'New Keynesian' models used by central banks.
Why it matters
They explain why experts reach opposite conclusions from the same data on deficits, stimulus and Fed policy.
Facts, rules and data
Founding texts such as The Wealth of Nations (1776), The General Theory (1936) and A Monetary History of the United States (1963); polls of economists such as Chicago Booth's Clark Center panels.
Debates and risks
Whether mainstream models capture financial crises and inflation surges well enough, after largely failing to anticipate 2008 and 2021, is debated.
Inside this (6)
Connections (2)
▸Schools of economic thought are dominated today by New Keynesian forms of Keynesian economics (John Maynard Keynes)Mainstream view
The connection
After 1970s stagflation discredited simple Keynesian models, economists merged Keynes's core idea, that demand shortfalls cause recessions, with monetarist and 'rational expectations' insights. The result, New Keynesian economics, holds that prices and wages adjust slowly, so central banks should steer interest rates. It underpins how the Fed, ECB and most central banks set policy today.
When and why
Developed in the 1980s–2000s by economists including Greg Mankiw, Olivier Blanchard, Michael Woodford and Jordi Galí.
How solid is the link?
Standard graduate textbooks, Woodford's Interest and Prices (2003), and the DSGE models used at the Fed, ECB and other central banks.
Debates and risks
The 2008 crisis and 2021–22 inflation exposed gaps, such as a thin role for banks; monetarists, Austrians and MMT supporters challenge its dominance.
▸Schools of economic thought disagree on the power of Monetary policy: steering interest rates and creditExperts disagree
The connection
Monetarists say controlling money growth controls inflation. Keynesians see monetary policy as powerful but weak in deep slumps, when rates hit zero. Austrians blame central-bank rate setting for booms and busts. MMT sees fiscal policy as the main lever. These views shape how much is expected of the Fed.
When and why
Debates from the 1930s (Keynes vs. Hayek) through the 1960s–70s (Friedman vs. the Keynesians) to MMT since the 2010s.
How solid is the link?
Visible in Fed policy shifts: money targeting under Volcker in 1979–82, the turn to QE after 2008, and ongoing academic disputes.
Debates and risks
Whether monetary policy can raise long-run growth or only shift its timing, and how much it can do near zero rates, remain open.