There are various ways of measuring a recession. These are reasonably useful when applied to minor fluctuations of the stock market, or to minor adjustments of the world economy. But the big booms and slumps need to be measured by their broader impact over time. The Great Depression can be regarded as lasting for ten years from 1929 to 1939; the Great Inflation ran for a similar period, from 1973 to 1982. Even these dates could be challenged, since both events were preceded by a build-up of debt and other warnings of trouble. Both were followed by aftershocks.
One can even argue about the correct date to take as the starting point of the present recession. It was certainly preceded by two great American bubbles, the dot-com bubble of the late 1990s and the U.S. housing bubble of this century. On one view, the present recession began on August 7, 2007 - only a year ago - when the sub-prime mortgage crisis came to the surface. That date could also be used to mark the bursting of the U.S. housing bubble, which is still having so damaging an impact on mortgage banking. Alternatively, one could reasonably start the present recession from the bursting of the dot-com bubble itself, which was the beginning of a bear market on Wall Street. That happened in the early months of 2000, already eight years ago. If this is a depression, it is a matter of choice whether one regards it as one or eight years old...
The present recession has some characteristics which make me think that it will be a relatively long one. The recession is centred on banking and property. In an ordinary recession, one has to wait for consumers to regain their confidence, which, in turn restores the confidence of business. Now one has to wait for the bankers as well. At present, banks are too anxious even to lend to each other, let alone to expand consumer credit or business loans. [More]