I knit while I listen to audiobooks so I often listen to them twice.

Since I am older I am cognizant of brain function. If I am listening to a book with four similar characters I make an effort to remember who is whom.

I've been listening to a lot of women in WWII/WWI books they are often based on real events. I don't remember having this problem in the past but it was about two years ago I began reading books with multiple main characters.

I don't often read non-fiction but recently read Quiet: The Power of Introverts in a World That Can't Stop Talking by Susan Cain. It is very good and I have enjoyed listening to it more than once.