- published: 19 Mar 2012
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Keynesian economics ( /ˈkeɪnziən/ KAYN-zee-ən; also called Keynesianism and Keynesian theory) are the group of macroeconomic schools of thought based on the ideas of 20th-century economist John Maynard Keynes.
Advocates of Keynesian economics argue that private sector decisions sometimes lead to inefficient macroeconomic outcomes which require active policy responses by the public sector, particularly monetary policy actions by the central bank and fiscal policy actions by the government to stabilize output over the business cycle. The theories forming the basis of Keynesian economics were first presented in The General Theory of Employment, Interest and Money, published in 1936. The interpretations of Keynes are contentious and several schools of thought claim his legacy.
Keynesian economics advocates a mixed economy — predominantly private sector, but with a significant role of government and public sector — and served as the economic model during the later part of the Great Depression, World War II, and the post-war economic expansion (1945–1973), though it lost some influence following the tax surcharge in 1968 and the stagflation of the 1970s. The advent of the global financial crisis in 2008 has caused a resurgence in Keynesian thought.
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