Social interactions help, yes.
Adjust the four factors, roughly stated as physical environment, physical health, personal life, and other people. Consider it as a physical disabilty, after all the brain is damaged (protein build-up, strokes) and apply a physical model of disability. Communication is a two-way thing, and the attitude of other person is a major part of the problem. The view of the world of a person with dementia is just as valid as anyone else's.
What we need to fix is people's attitudes to disability, not promote this ethically dubious "normal" or "average" person concept.
