Hi, the topic of communication is universal. A person living with dementia can have both expressive and receptive aphasia, which is a deficit in understanding and expressing language. This is indeed very frustrating for caregivers.
I work for AGE-u-cate Training Institute, which develops training materials for professional and family caregivers. I attached what we call an "empowerment tool," which provides some best practice approaches on various topics related to dementia care. We also have one-hour, online device enabled courses called REVEAL Aging. These courses are geared to caregivers. I hope these empowerment tools help you, and feel free to check out our website at http://www.ageucate.com. All the best as you move through your caregiving journey. We are here to help.