I wish more professional caregivers were aware of things like this. I can't tell you how many times Sis and I have seen someone who should know better approach Dad from the side and startle the heck out of him. Can you imagine having this happen to you over and over during the day? It would ruin your nerves.
The speaker in the video is Teepa Snow, a dementia expert who trains and consults for healthcare professionals and families.