Current State
Since 1990, the classical form of monetarism has been questioned because of events which many economists have interpreted as being inexplicable in monetarist terms, namely the unhinging of the money supply growth from inflation in the 1990s and the failure of pure monetary policy to stimulate the economy in the 2001-2003 period. Alan Greenspan, former chairman of the Federal Reserve, argued that the 1990s decoupling was explained by a virtuous cycle of productivity and investment on one hand, and a certain degree of "irrational exuberance" in the investment sector. Economist Robert Solow of MIT suggested that the 2001-2003 failure of the expected economic recovery should be attributed not to monetary policy failure but to the breakdown in productivity growth in crucial sectors of the economy, most particularly retail trade. He noted that five sectors produced all of the productivity gains of the 1990s, and that while the growth of retail and wholesale trade produced the smallest growth, they were by far the largest sectors of the economy experiencing net increase of productivity. "2% may be peanuts, but being the single largest sector of the economy, that's an awful lot of peanuts."
There are also arguments which link monetarism and macroeconomics, and treat monetarism as a special case of Keynesian theory. The central test case over the validity of these theories would be the possibility of a liquidity trap, like that experienced by Japan. Ben Bernanke, Princeton professor and current chairman of the US Federal Reserve, has argued that monetary policy could respond to zero interest rate conditions by direct expansion of the money supply. In his words, "We have the keys to the printing press, and we are not afraid to use them." Another popular economist, Paul Krugman, has advanced the counterargument that this would have a corresponding devaluationary effect, like the sustained low interest rates of 2001-2004 produced against world currencies.
Historian David Hackett Fischer, in his study The Great Wave, questioned the implicit basis of monetarism by examining long periods of secular inflation that stretched over decades. In doing so, he produced data which suggest that prior to a wave of monetary inflation, there is a wave of commodity inflation, which governments respond to, rather than lead. Whether this formulation undermines the monetary data which underpin the fundamental work of monetarism is still a matter of contention.
Monetarists of the Milton Friedman school of thought believed in the 1970s and 1980s that the growth of the money supply should be based on certain formulations related to economic growth. As such, they can be regarded as advocates of a monetary policy based on a "quantity of money" target. This can be contrasted with the monetary policy advocated by supply-side economics and the Austrian School which are based on a "value of money" target (albeit from different ends of the formula). Austrian economists criticise monetarism for not recognizing the citizens' subjective value of money and trying to create an objective value through supply and demand.
These disagreements, along with the role of monetary policies in trade liberalization, international investment, and central bank policy, remain lively topics of investigation and arguments.
Read more about this topic: Monetarism
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