This piece by Nouriel Roubini, a professor at the Stern Business School at NYU, lists 20 points of concern about the consumer economy and the present recession. This is the last point:
"To bring back the household savings rate to the level of a decade ago (about 6% of GDP) consumption will have to fall--relative to current GDP levels--by almost a trillion dollars. If all of this adjustment were to occur in 12 months, GDP would contract directly by 7% and indirectly (including the further collapse of residential and corporate capital expenditure in a severe recession) by 10%, an exemplification of the Keynesian 'paradox of thrift.' If such an adjustment were to occur over 24 months rather than 12 months, you would still have negative GDP growth of 5% for two years in a row with a cumulative fall in GDP from its peak of 10%. (Note that in the worst U.S. recession since WWII, such cumulative fall in GDP was only 3.7% in 1957-58). One can only hope that this adjustment of consumption and savings rates occurs slowly over time--four years, say, rather than two.
Even in that scenario the cumulative fall of GDP could be of the order of 4% to 5%, i.e., the worst U.S. recession since World War II. Note that the cumulative fall in GDP in the 2001 recession was only 0.4%--and in the 1990-91 recession only 1.3%. So, the current recession may end up being three times as long and at least three times as deep (in terms of output contraction) than the last two."
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