Wednesday, March 24, 2010

Will The Financial Crisis Affect Long-Term Economic Growth?

Economist Mark Thoma responds to Bill Easterly's argument that long-term growth of the economy will not be significantly hurt by the recent financial crisis. Thoma agrees that long-term growth will be okay if the US can exit stimulus measures gracefully and pay down the debt during the good times. See the following post from Economist's View.

Bill Easterly emails to ask what I think of this:
Stop panicking: Capitalism repeatedly recovers from financial crises, by William Easterly: I am just beginning to dive into the awesome book by Carmen Reinhart and Ken Rogoff, This Time is Different: Eight Centuries of Financial Folly. Along with great analysis, they have some wonderful pictures, evidence, and data. What I say here is my own take on it.

First, financial crises are remarkably common. Their Figure 5.1 shows the number of countries that have defaulted on their external debt (one possible dimension of a financial crisis) over the last two centuries. The numbers come in episodic waves of defaults and involve a remarkably high number of countries in each wave:

Second, the global capitalist system does well in the long run anyway. Average per capita income in the world (a shaky estimate, but probably right order of magnitude) increased by a multiple of 12 over 1800-2008, despite repeated epidemics of financial crises.

The US is arguably the country with democratic capitalism the longest, and it also shows a steady upward trend from 1870 to the present, despite repeated banking crises (using those identified by Reinhart and Rogoff), with usually little effect of each crisis on output relative to trend (except for the Great Depression).

Reinhart and Rogoff calculate directly the growth pattern before and after crises in advanced capitalist economies, and growth does indeed recover quickly to the trend growth rate of around 2 percent per capita per annum. 2 percent per capita is roughly the same growth rate that increased US per capita income so much from 1870 to the present.

y-axis reads "Real GDP Growth (Percent)"

I don’t mean to minimize the short run pain that the current financial crisis has caused. It’s horrible. But there is no reason to panic about the long run growth potential looking forward.

The obvious rejoinder is Keynes’ “in the long run, we are all dead.” But we can’t ignore that Capitalism already survived repeated financial crises and has made us all vastly better off despite them. So here’s a counter-quote: “In the long run, we are all better off because our dead ancestors stuck with capitalism.”

My take is a bit different. The graph of per capita income from 1870 - 2008 seems to say we shouldn't worry that aggressive intervention to stimulate the economy will cause long-run problems. It may help substantially in the short-run, but the graph above indicates it's unlikely to have long-run consequences. So, I agree, let's not panic. Let's not panic and start reducing stimulus measures too soon, or be too timid with stimulative policies, out of fear it might harm long-run growth. As the Great Depression shows us -- a time when there were legitimate fears about capitalism ending -- the more attention we pay to the short-run problems that undermine support for capitalism, the better chance there is that it will survive in the long-run.

I should acknowledge the Reinhart and Rogoff finding that debt levels higher than 90% of GDP are associated with lower economic growth:

...[D]ebt burdens are racing to thresholds of (roughly) 90 per cent of gross domestic product and above. That level has historically been associated with notably lower growth.


Given these risks of higher government debt, how quickly should governments exit from fiscal stimulus? This is not an easy task, especially given weak employment, which is again quite characteristic of the post-second world war financial crises... Given the likelihood of continued weak consumption growth in the US..., rapid withdrawal of stimulus could easily tilt the economy back into recession. Yet, the sooner politicians reconcile themselves to accepting adjustment, the lower the risks of truly paralysing debt problems down the road. ...
But as Rogoff notes elsewhere,
I am not as willing to give fiscal policy high marks. We could have, and should have, done more to help the economy, and it certainly could have been more timely. As for fears more aggressive intervention will lower long-run growth, so long as we have the discipline to exit from these policies gracefully -- to pay the bill for the stimulus package in the good times -- long-run growth should not be affected by aggressive intervention in the short-run.

I believe that when the time comes to pay for the stimulus package, we'll do the right thing, just as we've always done in the past (yes, I know I'm being Pollyannish). And, in any case, the long-run debt problem has little to do with the stabilization measures used to counter the effects of the recession. The growth in health care costs is the problem in the long-run, nothing else matters much in comparison. If we fix the health cost escalation problem, a much more aggressive intervention to help the economy could have easily been absorbed into the budget without creating problems. And if we don't fix the health cost problem, the size of the stimulus package is of little consequence by comparison.

Finally, on the general "stop panicking" message, when people are hurting -- and they are -- we ought to panic. Legislators have given little indication that the understand the urgency of the employment problem we face. We need more panic, not less, about the employment situation.

This article has been republished from
Mark Thoma's blog, Economist's View.

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