By November 2007, Mr. Taylor was an equity-derivatives trader on Goldman's Capital Structure Franchise Trading desk and had lost a "significant portion" of the trading profits he had accumulated earlier that year, according to criminal charging documents filed by prosecutors Wednesday.

WSJ: Ex-Goldman Trader Pleads Guilty to Fraud

That said, this problem of causality in the area of neuroscience is endemic to a lot of papers that come across my desk that try to relate a particular brain structure to a type of behavior.

FORBES: Do Liars Really Have Different Brains?

Matthew Lavicka, a managing director on Goldman's equities-trading desk and chairman of Sifma's trading and market structure committee, told the exchanges that he felt there was agreement among the majority of exchange customers: They couldn't safely be prepared for the NYSE contingency plan that involved routing orders away from the trading floor and to NYSE Arca in time for Monday morning.

WSJ: Behind Decision to Close Markets