It's a little off topic, but I happened to be reading a NYTimes obit and saw that this person earned his PhD (in history or some such) and yet the article repeatedly called him Mr. I remembered all the debates on this board about this and thought I'd bump this thread again.
I looked up on the NYTimes style guide, and sure enough PhD's aren't given the title Dr. unless they request it (I guess if you're dead your family would request it) and it's germane to their job i.e. lab/academic.
Medical doctors are given Dr. and I think that includes psychologists and others in the helping fields with doctoral level degrees.