Vidiot: I've came to the conclusion that authoritarian personalities - particularly those in leadership positions - don't experience cognitive dissonance the way the rest of us do .
You may find this thread interesting:
It's my review of the book, Mistakes Were Made (but not by me) , written by social psychologists Carol Tavris and Elliot Aronson.
Their book addresses the ubiquitous human traits of self-justification and failure to take responsibility for our mistakes.