Gee, now I'm starting to get an inferiority complex. As a sometimes AIDS educator who has worked with schoolkids - and prison inmates, for that matter - who are way younger than myself - your bringing up the legitimacy factor hits pretty close to home. And you have a point - the closer the audience can identify with you the better, and thats where I'm at a disadvantage. But I think a really good educator - whatever their age - is aware of that potential problem and can perhaps at least partly compensate for the age gap by good relating skills.

And of course, when I have to talk to the old geezers at the local service clubs - as I occasionally do - watch out! Coz I'm number one at that!

Fraid I'm not aware of any literature on this general subject though. Good luck with the search.