WHEN it comes to inflation, the Federal Reserve sometimes resembles a child freshly emerged from an age-inappropriate horror film. To its members, runaway price increases seem to lurk in every oddly shaped shadow. On June 14th America’s central bank raised its benchmark interest rate for the third time in six months, even as inflation lingered below its 2% target, as it has for most of the past five years. Some critics reckon the Fed’s 2% inflation target is too constraining. Indeed, in recent comments on a letter from prominent economists calling for a higher target, Janet Yellen, the chairman, signalled openness to the idea. But the Fed’s problem is less its target than an unforgiving pessimism about American productivity. If its bleak view is wrong, the Fed itself is partly to blame for slow growth.
Economists generally treat productivity growth as a “real” factor, outside central-bank control. Thus, it is thought to depend on things such as technological progress, workers’ skill levels and the flexibility of the economy. But productivity growth is cyclical: it varies depending on whether an economy is booming or busting. Central banks might therefore have more influence over it than they are prepared to admit.
Economies have a growth speed limit, determined by changes in population and productivity. When unemployment is high, the economy...Continue reading
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