This is a great article:
Feldstein writes in the WSJ: Our Economic Dilemma
Although it is too soon to tell whether the United States has entered a recession, there is mounting evidence that a recession has in fact begun.
…
If a recession does occur, it could last longer and be more painful than the past several downturns because of differences in its origin and character. The recessions that began in 1991 and 2001 lasted only eight months from the start of the downturn until the beginning of the recovery. Even the deeper recession of 1981 lasted only 16 months.But these past recessions were caused by deliberate Federal Reserve policy aimed at reversing a rise in inflation. In those cases, the Fed increased real interest rates until it saw the economic slowdown that it thought would move us back toward price stability. It then reversed course, reducing interest rates and bringing the recession to an end.
In contrast … [a] key cause of the present slowdown and potential recession was not a tightening of monetary policy but the bursting of the house-price bubble after six years of exceptionally rapid house-price increases. The Fed therefore will not be able to end the recession as it did previous ones by turning off a tight monetary policy
