Yes, that might be the psychological term for it, Frankie! I haven't used that word since the 1980's! :-)
And yes, Vidiot, I agree...an interesting thought......the GB are effected by cognitive dissonance (at lest if they are true believers) but their makes the dissonance copletely different from e g a sister (publisher) with no power att all in the organisation.
Could gognitive dissonance and megalomania be ....."overlapping" psychological phenomena? Or maybe is cognitive dissonance a part of megalomania......a megalomaniac can't be well functioning in his cognitive processes.