There are effective ways to relate to elderly who have communication disorders. They may need extra time to become focused before they can begin processing information. Sit face to face. Lip reading may be crucial. Minimize visual and auditory distractions - such as other people in the room, handheld objects and background noise and activity.
Appropriate lighting is essential, especially for lip readers.
Be sure to reduce glare by turning down lights that are too bright, and avoid sitting in shadows. Speak slowly and clearly, maintain eye contact and keep your mouth visible. Speak loudly enough for the person to hear you, but don't shout. Use short simple words and sentences. Be prepared to repeat or revise what you've said several times.