"The hormone that drives male aggression and sexual interest also seems able to boost short term success at finance. But what seems to start out well can turn bad, with elevated testosterone levels over several days possibly leading to irrational risk-taking, according to researchers at the University of Cambridge in England."and from USA Today on the same paper:
"Coates said he worked as a Wall Street trader during the dot.com bubble in the 1990s when millions of dollars were invested in new Internet companies, many of which later collapsed.This seems to fit the fast driving study of a month or so ago. Also in doing some research for this, I stumbled upon this article on porn and finance which I will refrain from commenting on until I look at it (I meant the paper!!! ;) )
He said trader behavior he observed didn't make sense in terms of economic or game theory, "everyone seemed to be on a drug."
Even in airport bars the crowd would be ignoring baseball to watch and cheer financial reports on television, Coates said."