The most recent Economist summarizes a fascinating study by two researchers over at the Stanford Business School -- Professor David Larker and PhD Student Anastasia Zakolyukina -- based on transcripts of American CEOs and CFOs statements during 30,000 quarterly earnings conference calls  between 2003 and 2007.  Yes, 30,000!  They linked the language that bosses used in these conference calls to whether or not the firms later "materially restated their earnings." Their paper is called...