It used to be thought that brain development ended in young adulthood, but now we know (it) continues throughout life. I think George would agree that it doesn't stop in the 50s. It's just overtaken by the negative effects of aging, so that the net effect is mental decline after that age.  -   Paul Thompson     Quotes
It used to be thought that brain development ended in young adulthood, but now we know (it) continues throughout life. I think George would agree that it doesn't stop in the 50s. It's just overtaken by the negative effects of aging, so that the net effect is mental decline after that age. Paul Thompson
 Adulthood