Monetarism

Monetarism
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Name	Monetarism
School tradition	Chicago school of economics
Notable ideas	Quantity theory of money, monetary policy rules, natural rate of unemployment
Year	1950s–1970s
Region	United States
Influenced	Great Moderation, New Classical macroeconomics
Notable figures	Milton Friedman, Anna Schwartz, Karl Brunner, Allan Meltzer

Monetarism is a school of economic thought emphasizing the primary role of governments in controlling the rate of money growth. It argues that variations in the money supply are the dominant cause of economic fluctuations, including inflation, recession, and business cycles. The theory, most closely associated with Milton Friedman, rose to prominence in the latter half of the 20th century as a major challenge to Keynesian economics and significantly influenced central banking practices globally.

Origins and development

The intellectual roots of monetarism are found in the classical quantity theory of money, articulated by earlier economists like Irving Fisher. Its modern formulation emerged in the 1950s and 1960s, primarily at the University of Chicago, where Milton Friedman led a revival of monetary analysis. A pivotal work was Friedman and Anna Schwartz's A Monetary History of the United States, 1867–1960, which argued that the Great Depression was caused by a severe contraction of the money supply by the Federal Reserve. This historical analysis challenged the prevailing Keynesian view that focused on aggregate demand and fiscal policy. The stagflation of the 1970s, which combined high unemployment with high inflation, further discredited Keynesian orthodoxy and created a policy opening for monetarist ideas, particularly during the administrations of Margaret Thatcher in the United Kingdom and the chairmanship of Paul Volcker at the Federal Reserve.

Core principles

The central tenet is a restatement of the quantity theory of money, expressed in the equation of exchange (MV = PT). Monetarists hold that in the long run, increases in the money supply primarily lead to price level changes, not sustained increases in real output. A key concept is the natural rate of unemployment, a level determined by real factors like market institutions and technology, which cannot be permanently lowered by monetary expansion. Monetarists assert that changes in the money supply affect the economy with "long and variable lags," making fine-tuning of the economy through discretionary policy destabilizing. They emphasize the importance of stable, predictable monetary policy rules, most famously Friedman's proposal for a fixed annual growth rate of the money supply, over the discretionary judgment of central bankers.

Policy implications

The primary policy prescription is for central banks, such as the Federal Reserve or the European Central Bank, to adopt a rule targeting a slow, steady growth rate of the money supply, aligned with the growth of potential output. This is intended to ensure long-run price stability and anchor inflation expectations. In practice, during the early 1980s, the Federal Reserve under Paul Volcker adopted a monetarist-inspired approach, sharply restricting money growth to break the high inflation of the period, though it later moved towards targeting interest rates. Monetarist thinking also underpinned the move towards greater central bank independence and the explicit adoption of inflation targeting by institutions like the Bank of England and the Reserve Bank of New Zealand.

Criticisms and debates

A major criticism, particularly from Keynesian economists like James Tobin and Franco Modigliani, is that the stability of the relationship between money supply and nominal GDP (velocity of money) broke down following financial innovations in the 1980s, making simple money supply targeting unreliable. The Bank of England and others found monetary aggregates difficult to control precisely. New Keynesian economics argued that rigidities like sticky prices and wages meant that demand shocks, including monetary ones, could have significant real effects in the short run, justifying active stabilization policy. Furthermore, the experience of the Great Recession and the Global Financial Crisis of 2007–2008, where central banks injected vast liquidity without triggering immediate high inflation, challenged core monetarist predictions and led to a renewed focus on fiscal policy and financial stability.

Influence and legacy

Despite the decline of strict money supply targeting, monetarism's legacy is profound. It successfully re-established the importance of monetary policy and the dangers of inflation for mainstream economics. Its emphasis on policy rules, central bank credibility, and the primacy of price stability became embedded in modern central banking doctrine worldwide, influencing the policies of the European Central Bank and the institutional design of many independent central banks. The intellectual battle between monetarists and Keynesians also spurred the development of New Classical macroeconomics, led by figures like Robert Lucas Jr., which incorporated rational expectations. While pure monetarism is no longer the dominant paradigm, its core insights about monetary neutrality in the long run and the hazards of discretionary policy remain central to macroeconomic theory and practice.

Category:Macroeconomics Category:Economic theories Category:Schools of economic thought