I listened to BBC Newshour talk to one of the scientists studying this. The scientist mentioned that other studies have shown that vocabulary does not narrow w

I listened to BBC Newshour talk to one of the scientists studying this. The scientist mentioned that other studies have shown that vocabulary does not narrow with normal aging. Word use does not change over time. A person's vocabulary narrowing is an early sign of dementia. It is important to recognize when this happens so that early interventions can be done.