In November 2009, defense counsel psychology experts tried to establish that Gowadia suffers from narcissistic personality disorder but U.S. Magistrate Judge Kevin S.C. Chang said in a ruling issued late Friday, November 20, that the testimony of the two defense witnesses — Richard Rogers, a forensic psychology professor at the University of North Texas, and Pablo Stewart, a psychiatry professor at the University of California, San Francisco — was not credible.