Is it correct to sign your name with Dr. as a signature? When you have
your doctorate degree, I have seen documents signed without puting the
doctorate designation before your name. Should it be signed Dr. John
Edmerson or signed John Edmerson, Ed.D?

I tooking to wondering about your question, to the point that after
not finding enough info on the internet- I called three local
universities. All three gladly transfered me to different departments,
and all three provided this:
"When having a docorate not in the medical field, for reasons to
prevent confusion the DR. should not be applied. Instead the doctorate
should follow the name"

All three persons I talked to had in fact a doctorate to their name,
and came to the same agreement. They were from OSU, Rhodes State and
University of Northwestern Ohio.

See prior question:

http://answers.google.com/answers/threadview?id=337723
Ph.D. Signature

Don't do it.  You'll look silly.

"How to sign documents or memos when you have your doctorate degree?"

The posters are all right, and the answer to the referenced question is very good.
On "documents or memos"  your name will probably appear in the heading
or under where you sign, and  - if relevant -  your degree can be
shown there.
Don't add it by hand before or after your name.

Fine English understatement echews the use of degrees; you are who you
are, and what you have to say stands on its own merits.  Many years
ago, a letter to a university club in NYC complained that an astronaut
had been introduced as "Dr. so-and-so".
But congratulations on your doctorate!

Conventions keep changing, and even here what was right in the past
need be now, more so when conventions are discussed on the net --
because we are not longer people from the same country or culture.

The convention of addressing a person as Dr. is different in India.
Here most people who have a doctorate [in any subject] address
themselves with Dr. in the prefix.

Johnson C. Philip
http://www.CalvinSchool.Info

Dr jcp  (drjcp-ga),
That is quite true, and in titles-conscious Germany and Austria (where
else?) also common, though disappearing, probably from the influence
of English and US ways.
The academic title of Dr becomes part of one's name, used on id-cards,
and should always be used when address the person in writing.  But the
custom is passing; in the same circle, some will speak to someone as
Dr ... and others don't, and some Drs will immediately or when the
acquiantanceship has developed suggest that the title be dropped.
Best, Myoarin