Um artigo promissor que saiu no blog www.voxeu.org aponta a primeira (que este blog verifica) projeção do fim da recessão dos EUA!
The recession will be over sooner than you think
Assistant Professor of Economics at Stanford University
PhD Candidate in Economics, Stanford
12 January 2009
A key source of the today’s economic weakness is uncertainty that led firms to postpone investment and hiring decisions. This column, by the authors whose model forecast the recession as far back as June 2008, report that the key measures of uncertainty have dropped so rapidly that they believe growth will resume by mid-2009. This means any additional economic stimulus has to be enacted quickly. Delaying to the summer may mean the economic medicine is administered just as the patient is leave the hospital.
Many pundits (e.g. Krugman) are warning that a dire recession is in the offing. We would have agreed with them three months ago; indeed, we wrote a VoxEU column predicting a severe recession in 2009; based on the analysis of 16 previous economic shocks, we forecasted a 3% drop in GDP and a 3 million increase in unemployment in each of Europe and the US with these predictions made from VAR forecasts (see Bloom 2008 for details).
We also worried about a far worse outcome – Europe and the US slipping into another Great Depression due to damaging policy responses. Luckily, using the latest data on uncertainty measures, our model predicts that the worst has been avoided.
Good news: Great Depression II avoided and growth resumes mid-2009
Much like today, the Great Depression began with a stock-market crash and a melt-down of the financial system. Banks withdrew credit lines and the inter bank lending market froze-up. What turned this from a financial crisis into an economic disaster, however, was the compounding effect of terrible policy. The infamous Smoot-Hawley Tariff Act of 1930 was introduced by desperate US policymakers as a way of blocking imports to protect domestic jobs. Instead of helping workers, this worsened the situation by freezing world trade. At the same time policymakers were encouraging firms to collude to keep prices up and encouraging workers to unionize to protect wages, exacerbating the situation by strangling free markets.
In fact economic uncertainty is now dropping so rapidly that we believe growth will resume by mid-2009.
Uncertainty is now falling
It now appears that the global policy response to the credit crunch has avoided repeating those mistakes. Instead, it has focused on delivering a massive dose of tax and interest rate cuts, and spending increases. Policies restricting free-markets have largely been avoided. This has calmed stock markets as the fears of an economic Armageddon have subsided. At the same time political uncertainty has dropped as world leaders have clarified their stimulus plans.
Figure 1 shows one measure of uncertainty – the implied volatility on the S&P 100 – commonly known as the financial “fear factor”. This jumped over three fold after the dramatic collapse of Lehman’s in September 2008. But it has fallen back by 50% over the last three weeks as both economic and political uncertainty has receded. Other measures of uncertainty have also fallen; this is even true for the frequency of the word “uncertain” in the press!
As uncertainty falls the economy will rebound
The heightened uncertainty after the credit crunch led firms to postpone investment and hiring decisions. Mistakes can be costly, so if conditions are unpredictable the best course of action is often to wait. Of course, if every firm in the economy waits, economic activity slows down.
But now that uncertainty is falling back growth should start to rebound. Firms will start to invest and hire again to make up for lost time. Figure 2 shows our predicted impact of the spike in uncertainty following the credit crunch. This is based on our detailed analysis of 16 previous financial, economic and politically driven uncertainty shocks. After falling by 3% between October 2008 and June 2009, we forecast GDP will rapidly rebound from July 2009 onwards.
So it’s now or never for expansionary policy
Many economists make the case for a stronger policy response. That might be right, but policy makers need to act fast. Any additional economic stimulus – be it a spending package, quantitative easing or a couple of rounds of liquidity injections – has to be enacted quickly. Dithering over different courses of policy will actually make things worse by adding uncertainty (see Caballero 2008). This is exactly what happened after 9/11 when the Federal Reserve Board criticized Congress for creating unnecessary uncertainty with its lengthy debates on investment tax credits.
Delaying the stimulus package until the summer may mean that it is too late. The economic medicine will be administered just as the patient is trying to leave the hospital!
Caballero, Ricardo (2008). “Normalcy is Just a Few Bold Policy Steps Away,” December 17, 2008.
Bloom, Nick, Max Floetotto and Nir Jaimovich (2008). “Really Uncertain Business Cycles.”
Bloom, Nick (2008). “The Impact of Uncertainty Shocks,” Stanford mimeo, forthcoming Econometrica.
Krugman, Paul (2009). “Ideas for Obama,” New York Times column, 11 January 2009.
1 See “Really Uncertain Business Cycles” by Bloom, Floetotto and Jaimovich for a more detailed discussion ; here is the abstract from that paper: “This paper proposes uncertainty shocks as a new impulse driving business cycles. We first demonstrate that uncertainty, measured by a number of proxies, appears to be strongly countercyclical. When uncertainty is included in a standard vector-auto-regression, uncertainty shocks lead to a large drop and rebound in economic activity. Guided by this we build a stochastic dynamic general equilibrium model that extends the benchmark neoclassical growth model along two dimensions. It allows for heterogeneous firms with non-convex adjustment costs for both capital and labor, and time varying uncertainty defined as fluctuations in the variance of technology shocks. Increases in uncertainty lead to large drops in employment and investment. This occurs because uncertainty makes firms cautious, leading them to pausing hiring and investment. This freeze in activity also reduces the reallocation of capital and labor across firms, leading to a large fall in productivity growth. Taken together, the freeze in the hiring and investment, and the drop in relocation, lead to a business cycle sized drop and rebound in output, investment and productivity growth after a rise in uncertainty.”
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