I think there is something to be said for the idea fear-based arguments standing out in people’s minds. Highly charged, emotionally relevant information is certainly processed differently from normal information, which is why advertisers will show very happy people drinking Coke, or people having car wrecks relying on their insurers. The correlations of investor margin debt and price movements of the markets might be one way to quantify how fear impacts speculative behavior …

That having been said, I do notice a kind of cultishness to the permabears… it is an ingrained belief that organizes their thinking about markets, the future, etc. The motivation, I suspect, is a desire to belong to a special group that will be spared the oncoming calamity.