We've frightened consumers to the point where they imagine there is a good prospect of a Great Depression. That certainly is not the prospect. No reputable forecaster is producing anything like a Great Depression. So it's still OK if you spend a little bit. You do not have to put all your money into a mattress.
Dr. Leamer also sees the economy in a "healing cycle" by the second half of 2009, without "significant growth", but with fewer of the "large negatives" we've seen so far.
We shall see. I do not think that the errors and excesses of the boom years will be corrected by then. My guess is that the inflationary recession will continue for a period of years rather than quarters, particularly since government policy seems driven to prevent markets from reaching equilibrium, and the Fed is producing monumental amounts of new money, much of it secretively, off its balance sheet. Estimates of Fed off-balance sheet money creation are in the trillions of dollars.
Here are a few analyses of the magnitude of these Fed activities: ritholtz.com/blog, nowandfutures.com (this site also has a reconstruction of M3, the broad monetary aggregate that was discontinued by the Fed in 2006.)