Yes! We only agreed to work with kids because the sessions are very short and they were in the booth with their parents, so it was much more like a game of shadow except everybody was wearing headphones and speaking into a microphone.
We produced some audio books for a book publishing company a few years ago, and quickly found out that you can only stretch out a child's attention span to a few minutes at a time; 30 if we were lucky.
Since then, we only produce audiobooks with more experienced kids with good reading skills(10 and up) or adult voice actors that will do the part of a young character in a book.