Keynesian School — LLMpedia

Keynesian School
Name	Keynesian School
Founder	John Maynard Keynes
Established	1930s
Region	United Kingdom
Fields	Macroeconomics, Public Finance
Notable works	The General Theory of Employment, Interest and Money

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Keynesian School

The Keynesian School emerged in the 1930s as a response to the Great Depression and as an alternative to classical theories advanced by figures associated with Say's Law and the Austrian School. Its intellectual center coalesced around scholars at institutions like University of Cambridge, London School of Economics, and networks linking Royal Economic Society members, shaping twentieth‑century fiscal and monetary practice. The school influenced policy actors at bodies such as the United Kingdom Treasury, the United States Treasury Department, and international organizations including the International Monetary Fund and the World Bank.

History and Origins

The origins trace to John Maynard Keynes and the publication of The General Theory of Employment, Interest and Money (1936), which challenged precepts found in works by Alfred Marshall, Arthur Cecil Pigou, and debates with proponents of the Classical economics tradition. Early proponents and interpreters included Richard Kahn, Joan Robinson, Roy Harrod, Ludwig Lachmann, and Austin Robinson at King's College, Cambridge and the Economic Journal forum. Keynesian ideas spread through policy networks connecting New Deal officials like Frances Perkins and Harry Hopkins, advisors in the Bretton Woods Conference, and academics at Harvard University, Princeton University, and Columbia University. Postwar consolidation involved economists at Council of Economic Advisers and central bankers influenced by figures such as John Hicks, Paul Samuelson, E. Roy Weintraub, and James Tobin.

Key tenets build on notions introduced by John Maynard Keynes concerning aggregate demand, liquidity preference, and the multiplier effect. The theory of effective demand contrasts with classical full‑employment assumptions advanced in literature by David Ricardo and Thomas Malthus, while incorporating interest theory dialogues from Irving Fisher and Alfred Marshall. Concepts include the multiplier (developed by Richard Kahn and popularized by John Maynard Keynes), the liquidity preference function debated with Milton Friedman and Friedrich Hayek, and wage‑price rigidity issues engaged by Joan Robinson and Piero Sraffa. IS‑LM apparatus by John Hicks and Alvin Hansen synthesized investment‑saving and liquidity‑money interactions, intersecting with debates involving Robert Mundell, James Meade, and Nicholas Kaldor. The role of expectations connects to later work by John Muth and Robert Lucas.

Policy prescriptions emphasized demand management through fiscal measures advocated by John Maynard Keynes, Alvin Hansen, and Paul Samuelson for countercyclical spending and taxation changes executed by ministries like the United Kingdom Treasury and agencies such as the United States Congress's appropriations committees. Monetary policy implications engaged Federal Reserve System officials and scholars including Milton Friedman in debates over liquidity rules. Public investment projects tied to infrastructure planners at agencies like the Public Works Administration and monetary stabilization efforts influenced postwar reconstruction via Marshall Plan administrators and officials at the International Monetary Fund. Stabilization policy also informed welfare state design implemented by cabinets of Clement Attlee, Franklin D. Roosevelt, and Konrad Adenauer and technocrats at institutions such as the Organisation for Economic Co-operation and Development.

Divergent strands emerged: Classical Keynesianism interpreted by Paul Samuelson; Post‑Keynesian economics advanced by Joan Robinson, Nicholas Kaldor, Paul Davidson, and Hyman Minsky; New Keynesian economics developed by Gregory Mankiw, David Romer, N. Gregory Mankiw, Stanley Fischer, and Michael Woodford integrates microfoundations and price stickiness debates with contributions from George Akerlof and Joseph Stiglitz. Neo‑Keynesian syntheses incorporated IS‑LM and Phillips Curve work by A. W. Phillips and Edmund Phelps. Heterodox offshoots include proposals from Abba Lerner on functional finance and Richard Kahn's multiplier extensions.

Keynesianism faced critiques from Friedrich Hayek and the Austrian School emphasizing information problems and price signals, and from Milton Friedman and the Chicago School highlighting monetary versus fiscal primacy and rational expectations as developed by Robert Lucas. Debates over the Phillips Curve involved Milton Friedman and Edmund Phelps on natural rate hypotheses, while critiques from Ludwig von Mises questioned policy activism tied to public finance arguments by Abba Lerner. Methodological disputes engaged Karl Popper‑influenced philosophers and economists at University of Vienna and University of Chicago. Episodes such as the stagflation of the 1970s prompted reassessments by policymakers in cabinets like Margaret Thatcher's and Jimmy Carter's, and by central bankers including Paul Volcker.

Keynesian ideas shaped postwar institutions including the Bretton Woods Conference outcomes, the architecture of the International Monetary Fund, and fiscal regimes in welfare administrations under leaders like Clement Attlee and Franklin D. Roosevelt. Central bank practices at the Federal Reserve System and the Bank of England reflected Keynesian demand management debates, as did fiscal councils and ministries in nations such as France, Germany, Japan, and Sweden. Academic dissemination occurred through journals like the Economic Journal, Quarterly Journal of Economics, and textbooks by Paul Samuelson and Alan S. Blinder. Later revival efforts engaged policymakers during crises at institutions including the European Central Bank and national cabinets of Barack Obama and Gordon Brown.

Category:Schools of economic thought