Support and encourage speech efforts.
Don't talk about the person as if he or she were not there.
Speak as you would with any adult or, perhaps, a little slower.The person's inability to find a word does not mean that he or she has lost intelligence or knowledge.
Don't insist that the person give accurate responses, or "talk right."
The person wants to do nothing more than just that.
Ask direct questions requiring a simple "yes" or "no" response rather than a complex answer. "Are you feeling well?" rather than , "How are you?"
Encourage gestures and "talking with hands" or pictures whenever possible.
Don't pretend to understand when you don't. Repeat what you have understood and allow the person to respond.
Don't talk for the person unless absolutely necessary.
Treat the person as an adult.
In case of emergencies, ask the person for printed information so that you can contact a responsible party. Call 911 should a physical emergency occur.