There's definitely been a shift in psychology toward buying equities instead of selling them. People have decided that even though it's going to be a slow recovery, it's better to be in stocks than in bonds.

People are still very very nervous and looking over their shoulder on the domestic recovery. I think the market could come back again, though -- stocks have had a lot of resilience the last few days.

People were expecting weak retail sales, they were already in the stocks.

People think the worst is over in a lot of these things. It's given them courage to come back in.

People are not homogeneous; we're not all the same physically, psychologically or dispositionally. There's a huge area of psychology that's worked to define personality as a primary basis for individual differences.

The human mind is not a terribly logical or consistent place.