by Calculated Risk on 3/25/2013 01:23:00 PM

This is a response to some analysts who think central bankers are currently following a "beggar-thy-neighbor" policy. Fed Chaiman Bernanke disagrees (so do I).

From Fed Chairman Ben Bernanke: Monetary Policy and the Global Economy. A few excerpts:

The uncoordinated abandonment of the gold standard in the early 1930s gave rise to the idea of "beggar-thy-neighbor" policies. According to this analysis, as put forth by important contemporary economists like Joan Robinson, exchange rate depreciations helped the economy whose currency had weakened by making the country more competitive internationally.5 Indeed, the decline in the value of the pound after 1931 was associated with a relatively early recovery from the Depression by the United Kingdom, in part because of some rebound in exports. However, according to this view, the gains to the depreciating country were equaled or exceeded by the losses to its trading partners, which became less internationally competitive--hence, "beggar thy neighbor." Over time, so-called competitive depreciations became associated in the minds of historians with the tariff wars that followed the passage of the Smoot-Hawley tariff in the United States. Both types of policies were decried--and in some textbooks, still are--as having prolonged the Depression by disrupting trade patterns while leading to an ultimately fruitless and destructive battle over shrinking international markets.

Economists still agree that Smoot-Hawley and the ensuing tariff wars were highly counterproductive and contributed to the depth and length of the global Depression. However, modern research on the Depression, beginning with the seminal 1985 paper by Barry Eichengreen and Jeffrey Sachs, has changed our view of the effects of the abandonment of the gold standard.6 Although it is true that leaving the gold standard and the resulting currency depreciation conferred a temporary competitive advantage in some cases, modern research shows that the primary benefit of leaving gold was that it freed countries to use appropriately expansionary monetary policies. By 1935 or 1936, when essentially all major countries had left the gold standard and exchange rates were market-determined, the net trade effects of the changes in currency values were certainly small. Yet the global economy as a whole was much stronger than it had been in 1931. The reason was that, in shedding the strait jacket of the gold standard, each country became free to use monetary policy in a way that was more commensurate with achieving full employment at home. Moreover, and critically, countries also benefited from stronger growth in trading partners that purchased their exports. In sharp contrast to the tariff wars, monetary reflation in the 1930s was a positive-sum exercise, whose benefits came mainly from higher domestic demand in all countries, not from trade diversion arising from changes in exchange rates.

The lessons for the present are clear. Today most advanced industrial economies remain, to varying extents, in the grip of slow recoveries from the Great Recession. With inflation generally contained, central banks in these countries are providing accommodative monetary policies to support growth. Do these policies constitute competitive devaluations? To the contrary, because monetary policy is accommodative in the great majority of advanced industrial economies, one would not expect large and persistent changes in the configuration of exchange rates among these countries. The benefits of monetary accommodation in the advanced economies are not created in any significant way by changes in exchange rates; they come instead from the support for domestic aggregate demand in each country or region. Moreover, because stronger growth in each economy confers beneficial spillovers to trading partners, these policies are not "beggar-thy-neighbor" but rather are positive-sum, "enrich-thy-neighbor" actions.