Sort:  

It was a process I guess. I don't remember a lot of my childhood, so this situation definitely made a big impression. I learned reading at that same age, spent a lot of time studying the bible, and also received the communion with 7 or 8. I know for sure that I didn't believe anything that happened there.
I resorted to praying once, when I couldn't find a toy or something in my mess around the age of 10. But I quickly realized how silly that was :D

I knew the answer at the age of 10, don't need to read those today: imaginary friends can't talk ;)

Unless you prayed to St. Anthony, and he helped you find your lost toy ;).