"It's not what you say, but how you say it." This expression holds doubly true when communicating with individuals with dementia.
Alzheimer's disease or related illnesses impair a person's ability to understand words and to speak. However, they can still benefit from non-verbal communication—body language, voice tone and facial expressions. As the individual's ability to process verbal information declines, the importance of how caregivers communicate with them, verbally and non-verbally, increases.
Communication also plays a big role in behavior management.