We had some of my son's friends over for a dinner playdate last weekend, and one of the kids kept taking books into his bedroom and reading them quietly by herself. When she was done she would come out, get a new book, and go back to the bedroom to read some more.

I was so impressed! She is 6... my son is still 5, but turns six later this year and isn't in the habit of reading alone yet. When does this magical time start?