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Questo articolo è stato pubblicato il 31 dicembre 2013 alle ore 16:06.


CAMBRIDGE – For the past six years, I have been skeptical about the standard optimistic forecasts of the pace of US economic growth in the year ahead. Where most forecasters and policy officials saw green shoots and reasons for confidence, I saw strong headwinds that would cause an economic downturn and then a subpar recovery.

But I think the evidence for 2014 is more balanced. Although there are serious risks facing the US economy in the coming year, there is also a good chance that growth will be substantially stronger than it has been since before the recession began.

The economy was still expanding in the late summer of 2007, when at the US Federal Reserve’s annual Jackson Hole conference about serious risks to the economic outlook. I warned that house prices had begun to fall in the summer of 2006 from dangerously high levels, implying a future collapse of construction activity and large losses of household wealth. Reduced household wealth would lead, in turn, to lower consumer spending, further depressing GDP.

I also stressed that financial markets had become dysfunctional. Banks and other financial institutions had doubts about the value of various asset-backed securities on their own balance sheets and on those of potential counterparties. No one knew the real value of credit-default swaps and of the various tranches of collateralized debt obligations. Financial institutions were therefore reluctant to lend to other financial institutions. With credit flows disrupted, the economy could not continue to expand.

Moreover, I warned that the Fed was too complacent and should be reducing sharply the federal funds rate, which was above 5%. The economy peaked a few months later, and the Fed began aggressive easing in 2008. Although the Fed and the US Treasury cooperated in addressing financial-market dysfunction, this was not enough to restore solid economic growth.

The restoration of normalcy to financial markets and lower interest rates did cause an economic upturn in the summer of 2009, leading many forecasters and market participants to expect a typical rapid post-recession recovery. I warned that the upturn would be much more tepid than expected: unlike previous business cycles, the recession that began at the end of 2007 was not caused by high interest rates, so lowering rates would have little impact.

US President Barack Obama’s new administration announced a three-year fiscal package intended to stimulate aggregate demand. Administration officials and others predicted that fiscal stimulus would cause the economy to rebound, as it had in the past. But the fiscal package was not very effective. It was too small to close the output gap, leaving continued downward pressure on demand. Much of the stimulus merely financed increased spending by state governments that would have been paid for in other ways. Other parts of the stimulus went to individuals, but, given the nature of the fiscal package, increased transfers and spending added more to the national debt than to GDP.

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