On BreitBart.com the following claim is made:
HELENA, Mont. (AP) — Sen. John Walsh of Montana said Wednesday his failure to attribute conclusions and verbatim passages lifted from other scholars' work in his thesis to earn a master's degree from the U.S. Army War College was an unintentional mistake caused in part by post-traumatic stress disorder.
"I don't want to blame my mistake on PTSD, but I do want to say it may have been a factor," the senator said. "My head was not in a place very conducive to a classroom and an academic environment."
Has any research shown that PTSD can be a factor in causing one to plagiarize?