I believe the answer is: Less than 1%.
Late adulthood refers to the age group which begin at age 65 - Older.
Up to this point, people generally care less about physical appearance and materialistic objects. Most couples also had already experienced a lot of hardships together which strengthen their bond.
as legend is said to have predicted, an eagle nested on a nopal cactus. .
In criticizing the structuralists' reliance on the method of introspection, William James argued that two people could view the same stimulus quite differently. James's argument illustrates our experience of the world is highly subjective.